How to close a crack in plastic under pressure. How to fix cracked windshield. Do-it-yourself bumper repair requires a minimum set of tools

Sportsman 14-01-2010 11:44

like this - provided that all the pieces are picked up Do not offer a car service for bumpers - it's very expensive and in general I want to try it myself

Ann 14-01-2010 11:49

I myself did not believe that burst plastic shelf from the refrigerator can be stupidly glued with a thermal gun, and it works fine further. Just glued the seam, and that's it. Although in a good way it was necessary, of course, to take a mesh, even a window one, and “plaster” it on a layer of glue, so that it would be stronger.
Well, of course, you need to look at what kind of plastic, some are glued just disgustingly, and some can be soldered with a hairdryer.

Sportsman 14-01-2010 11:55

When it arrives, I'll take a look. Something seems very similar to a scoop green (blue, red) plastic bucket

Charnota 14-01-2010 12:13

How many pieces?

Sometimes epoxy rolls onto a fabric base.

Sportsman 14-01-2010 12:17

I don't know yet

TAURUS 14-01-2010 12:22

dichloroethane glues well ...

How to turn an ordinary plastic bucket into a great basket

if you first dissolve a part of this plastic in it ... but on the condition that this plastic dissolves in this substance ...

Sportsman 14-01-2010 12:32

All these methods are known to me and have been used. I'm wondering if they've come up with something new? And how to reinforce with mesh - how to fuse it into plastic? Brass mesh?

alchemist 14-01-2010 12:40

When it arrives, I'll take a look. Something seems very similar to a scoop green (blue, red) plastic bucket

buy a thermal gun and glue with heating through fiberglass or other fittings. Old buckets - polyethylene, everything will stick together to die.

alchemist 14-01-2010 12:42

Originally posted by Sportist:
All these methods are known to me and have been used. I'm wondering if they've come up with something new? And how to reinforce with mesh - how to fuse it into plastic? Brass mesh?

yes, how like that ... you stupidly take this mosaic and pick up the nozzle - you glue it right along the seam, it grabs quickly, having assembled it, you paste the mesh on the inside, fiberglass at the seams.

alchemist 14-01-2010 12:43

forget about dichloroethane, if, as you said, plastic is like a Soviet bucket, then polyethylene is there with a high degree of probability, or polypropylene, and DCE will not take it.

Sportsman 14-01-2010 13:13

Dichloroethane will most likely not work here ... What is a thermal gun? In my understanding, this is Chinese shnyaga for 50 rubles, which spits hot melt adhesive (hot melt adhesive in rods)

alchemist 14-01-2010 13:18

yeah, it’s for them, the casing will be heavily thermally loaded? if yes, then there is dandyl heat resistant compound

Sportsman 14-01-2010 14:49

How thermally loaded is the casing on outboard motor? 40-50 degrees, hardly more. I'll have to try hot melt adhesive.

makarharp 14-01-2010 15:24

somewhere on motorcycle sites I saw an exhaustive topic on gluing broken plastic, and it seems that I even duplicated it here ... look, you can find it.

alchemist 14-01-2010 15:25

then there is a reserve, take the rods from 160 and that's it.
There is experience in repairing two NON-FUCKING holes on the plastic of the radiator with a dandyl compound, heat-resistant, black. Zallos like a monolith, shaking blows suffered with honor.

Sportsman 14-01-2010 17:26

from 160 what is this? Temperature? Price?

alchemist 14-01-2010 17:43

temperature, at the price of a kilo of rods in Leroy Chot about 110 rubles, ekstrotronk

Sportsman 15-01-2010 09:44

I don’t know what Leroy is, I’ll look at our radio shops which are

op-to-mat 15-01-2010 22:31

And which one did you mean?

demon 15-01-2010 22:40

cyanoacrylate type Loctite 401

Home▲▼

Do-it-yourself plastic bumper repair

Even the most experienced driver cannot be insured against damage to the bumper of your car. If not you, then you. If it is solved through the insurance - good. If the insurance does not roll, then there are two options: trust the professionals (here, too, it often happens badly) and lay out not a small amount or Do your own bumper repair.
It all starts with damage assessment. Usually a bumper is not very expensive, especially if you buy a Chinese counterpart. If the bumper has suffered quite seriously, then there can be no question of any restoration of it - it will come out more expensive. Repair work It is advisable to restore a plastic bumper if there is a small crack or cracks, scratches, chips, dents, or if a replacement cannot be found at all.

Before repair, it is desirable to remove the bumper, for convenience. The entire restoration process, up to painting, is conveniently performed on a separate stand.

Procedure

— Remove the damaged bumper;

- Wash it well;

- Delete paintwork damaged area;

- clean the outer and inner surface with a grip of 10-15 mm on the sides of the damage. The layer of paint removed during stripping must be at least 0.2 mm, since upper layer surfaces during operation often change their properties, which may affect the quality of our repair seam;

- Drill the ends of the cracks (this will prevent their further growth). Here, similarly as in the repair of cracks, chips on windshield with your own hands;

- To make the actual repair - we will consider the methods below;

- Priming and painting - will be required in most cases.

To repair the bumper with your own hands, you will need a minimum set of tools:

— car hair dryer. This is a special device that does not differ in appearance and principle of operation from a conventional hair dryer. The only difference is that the flow of hot air from such a hair dryer has more high temperature and can soften or melt plastic.

— soldering iron. You can use any soldering iron, preferably more powerful. Rosin and tin are not required, not the case.

— Metal mesh. These are sold in specialized stores. The mesh will allow you to fasten pieces of plastic together. You can use an old air filter.

— Priming. An ordinary canister will do just fine. automotive primer. If there is a compressor and a spray gun, then it's even better. Take your pick - it doesn't matter.

— Putty. No matter how perfect you solder the cracks, you still need putty. The exception is if this place is not visible.

— Sandpaper. For grouting putty 40 and 80 numbers, and for grouting soil already 800.

— Any rag. It will be needed when washing the bumper, and when working with a hair dryer, because straightening hot plastic with bare hands is not always comfortable. It's good to use gloves as well.

— Piece of an old bumper. It will be needed in exceptional cases when there is not enough plastic.

It may be advisable to buy a repair kit that includes items such as sandpaper, various retouching paints, and fillers. Such kits are not so expensive and can be cheaper than taking everything separately, since the kits do not use large packaging - why do you need a whole can of primer for a small crack? Also putty, etc.

bumper repair

To begin with, a qualitative inspection is carried out in good lighting. Determine how many cracks, scratches, chips and dents your bumper has. We immediately calculate the amount of mesh, putty and other Supplies. It is best to do this before buying consumables and the missing tool.

Now let's take a closer look at the inside of the bumper. There you need to find extruded (in some cases melted) information about the material of the product. Depending on the type of marking, the following conclusions can be drawn:
type designations PP (PPTV20 and analogues) - the bumper is made of propylene;
mark PUR - polyurethane bumper;
PAG 6 (GF, ABS) - the designation of hard plastics.

But this is not a complete list of materials from which bumpers for cars are made. You can also find parts made of fiberglass and similar carbons, but they are marked very rarely and the maximum that can be found is the manufacturer's data. But if your bumper is made of hard (thermosetting) plastic or carbon, then repairing plastic bumpers of this type is different from repairing products made from other materials.

Cracks.

If there is a crack on the bumper, then we need a soldering iron and a mesh. Flip the bumper upside down and cut the mesh. It is worth making oblong pieces 2-3 centimeters wide and a crack long in size. Bring the edges of the crack together and solder one end of the mesh. We need to drown it in plastic, but we don’t get carried away much, you can just make a hole. After that, melted plastic should cover the end of the mesh. Further, in this way, we solder the entire crack.

Let's look at the outside of the bumper. If everything is ideal there, then nothing needs to be done. Otherwise, we go through the grid and along outside. The main thing is to hide the ends of the mesh so that nothing sticks out. When you sharpen putty sandpaper you will regret the protruding hairs of the net.

Small cracks, instead of mesh, can be reinforced with staples from a furniture stapler. The size of the staples should be chosen so that their legs do not pierce through the body. If there are no suitable staples, then you can take others and shorten them to the desired length. Use tweezers when soldering fittings, so you will protect yourself from burns.

We place the staples perpendicular to the seam at a distance of 1-2 cm along the entire length of the fault. Barely emerging cracks and branches are also fused. Otherwise, in the future, from vibration, they will develop into splits. In order to protect the staples from corrosion, completely cover them with heated plastic, pulling it from adjacent areas. After you fuse the bumper inside, the front surface should take its original shape.

If the cracks on the bumper are large or there are fasteners nearby (the places where the bumper is attached to the body), since the nearby surface of the bumper often breaks, it is advisable to tighten the crack with screws before soldering. A fairly simple but very effective method is proposed.

We take a suspension - it’s definitely called a “metal suspension for attaching guides”, there are such in any hardware store. We need it to tighten the crack with screws.

We cut it with a hacksaw or "grinder" as shown in the photo, depending on the type of bumper crack. Usually use parts 1 or 2 - the holes used are shaded in blue. Although it happens that when two cracks converge together, piece of iron No. 3 is used. Below is an example of the location of the plates on a bumper crack.

In the figure - blue shows the working holes for the bolts. We drill holes in the bumper for screws, with reverse side we put the plate, insert the screw into the holes and fix the whole structure with nuts.

If you are repairing a bumper for the first time, then be sure to carry out this procedure from the inside (and not the first time, too).

Place a plate over the crack. Through the holes in the plate, drill holes in the bumper with a drill with a diameter of 3.6 to 3.8 mm. Drill so that the drill is closer to the outer edge of the plate hole.
the drilled hole in the bumper must be countersinked so that the screw head "drowns" into the bumper. If there is no countersink, a drill bit with a diameter slightly larger than the diameter of the screw head can be used instead. When countersinking, do not overdo it, do not drill through! But too small a hole is also not necessary. And one more thing - you can drill manually, just by hand, with a large drill in the hole drilled for the screw, make a couple of turns - and the desired angle for the hat is ready.

We check the quality of soldering. Shake in the place of the crack after drying.

How to fix a barrel, flask, bucket, watering can, canister

If everything is flimsy, then you have to solder it. However, this cannot be allowed, everything should be done for sure. After splicing the crack, the bumper surface should also be degreased and covered with fiberglass, and then with putty.

dents

If the dent turned out without a scratch, that is, the paintwork remained intact, you are very lucky. You can fix it in minutes. This completes the restoration of the bumper. All you need to do is wet a regular rag, turn on the hair dryer and heat the dent from the back. Warm up usually no more than thirty seconds. Then we wind a damp rag on a fist and begin to bend the plastic back. We do everything carefully and without the use of great force. The main thing is not to transfer everything out. You can do several approaches in a break of ten minutes, allowing the plastic to cool.

In the case when, in addition to the dent, there is also a crack, we perform the same actions, but with the expectation of further puttying and painting the surface.

Chips and scratches

You can fight them with sandpaper. We take the largest one (number 40) and start rubbing. It is necessary to sharpen the holes, turning everything into more or less flat surface. The pit, in fact, increases in diameter, but loses in depth. Then we will fill this depth with putty. It is advisable to use body bars, if available, but you can also rub with your palm.

Detailed instructions for removing chips and scratches on a car - for those who need it.

A good result is obtained by using liquid plastic that matches your type of plastic on the bumper. Be sure to consult with the seller, after writing down the type of material of your bumper.
Stick masking tape (it is better to use self-adhesive fiberglass tape) on the front surface of the bumper. On cardboard, mix the adhesive mass and thickener. Apply the resulting mass to the masking tape. This is done to level the surface of the bumper. Next, the masking tape is removed, and the surface is again cleaned and sanded. Apply to this place liquid plastic. After the plastic has hardened, you need to sand the surface.

Putty

Let's prepare the putty by adding a hardener to it. After that, we will immediately apply dents (if the paintwork is damaged), cracks, scratches or chips to the place. This is done naturally after the above mentioned measures to eliminate breakdowns.

Wait ten minutes before starting work. We take sandpaper number 80. With the help of movements directed to the left and right edges of the bumper, it begins to overwrite the putty. Sooner or later you will come to the desired result. Of course, the geometry of the body should be observed if the breakdown appeared in some not very convenient location. You can make several additional layers of putty to give a more even surface.

We prime

Take a rubber rag, wash the bumper and let it dry. Let's check the result for the last time. If everything suits you, then you can proceed to the primer. We take cans or turn on the compressor. Apply the primer with movements directed, again, to the left and right edges of the bumper. Essentially, you need to draw a horizontal line while spraying.

Let the soil dry completely. After that, you will need to take eight-hundredth sandpaper and wash it thoroughly. This is done with a bottle of water. No matter how local the breakdown was, the entire bumper is completely washed out. It should become matte after drying. And the first layer of soil is completely washed off, leaving only gray dots in the risks and pores on the putty.
We will apply another layer of soil, which we will also wash. Check the flatness of the surface under the lamp. There should be no small pores or scratches. The surface at this stage should be perfectly flat.

Now the bumper is completely ready for painting. We advise you to paint everything as soon as possible.

Repair of plastic bumpers made of thermosetting plastics and fiberglass

On the one hand, this method will not require great skills and abilities from you, but on the other hand, it is necessary to follow all the instructions exactly. Only in this case, you can achieve a good result.

The procedure for carrying out repairs:

we combine the cracked parts, fix them with any quick-drying glue;

preparing epoxy resin for further use;

take a brush and coat the area of ​​the crack ranging from 5 cm wide from the inside of the bumper;

impregnate epoxy resin fiberglass mat and lay it on the prepared area. In the absence of such material, a mesh used to seal drywall joints may be suitable. In the latter case, you will have to apply another layer of epoxy.

Note that in this procedure the fiberglass must be repeatedly applied layer by layer so that the approximate thickness of the bonded patch matches the thickness of the bumper in that area. Front side the product remains unglued. The putty used to hide solder marks and other irregularities should be designed specifically for plastic in any case. Next, paint the finished bumper and screw it into place. If you believe the statistics and try the technique in practice, then in subsequent operation, if cracks appear on it, then in some other place, but definitely not in the place of the seam we sealed.

In any case, you should not forget that the bumper is, first of all, the face of the car and requires proper care and timely repair. And it will be self repair or bumper repair in a car service - it's up to you.

I myself have not tried to seal plastic buckets, but I have seen how it is done. 5. The neck is glued to the bath with hot glue. The edges of the holes are slightly trimmed with a larger diameter drill, there should be no burrs! 4. In the intended circle, we drill 5-7 drain holes 4-5 mm in diameter.

ATTENTION! Washcloths and sponges need to be changed quite often, especially if they have lost their integrity and started to crumble. Please note: bathe the baby in a large shared bath You can only pre-treat its surface with soda, baby soap or special detergents. Suction cup accessories must be attached before filling the tub with water.

How to seal a plastic container?(+)Yesterday

Water intrusion and detergents reduces the reliability of fixation.

This is a steel structure, adjustable in height, on which the bath is installed.

In the design of the bath, the factor of its stability is important.

With this posture, the passage of gases is facilitated and colic pains are more easily tolerated. The product meets all safety and hygiene requirements.

Microban is not released into the water and does not lose its properties over time.

The material of the product contains the additive Microban, which disinfects the water when bathing.

If the bath is stationary, then the legs should be anti-slip pads. The accessory provides the baby with soft support and prevents it from slipping. The sponge shape for bathing has a profile corresponding to the anatomical contours of the child. In its form, stops are provided between the legs and under the armpits. The anatomic slide is attached to the tub with suction cups. Hanging hammock made of fine mesh, with the help of hooks is hung over the bottom of the bath.

It is a removable stand that fixes the position of the child and allows you to make bathing safe and convenient.

What to consider when choosing a bath for a newborn

The anatomic bath has a built-in slide-support inside, following the contours of the child's body, so when bathing, he feels more confident. Armed with knowledge about the varieties and properties of baby baths and additional items for them, you will make right choice at the time of buying. For faster falling asleep, it is recommended to do a general massage for the baby, a video tutorial can be viewed in this publication.

This allows you to fix the baby in a comfortable position.

Very comfortable for newborns.

Increases convenience built-in drain. It allows you to quickly and easily change the water during bathing without disturbing the child.

The bath should not be too small so that the baby can use it for at least six months.

It is strange that almost all the accessories are mentioned here, but they forgot about swimming circles - this is about bathing in the bathroom. And when the baby grows up, you can bathe him in a spacious common bath, and leave the nursery for future offspring. Swimming hill.

Therefore, everything is available.

In some models, the stops are adjustable to match the height of the child. After use, it folds up compactly. Buying these items separately will cost less. But you can become the owner of things that you personally do not need.

Having broken plastic bumper on a VAZ car, the owner can relatively inexpensively purchase and install a new one, painted in suitable color. The owners of foreign cars are not so lucky, plastic body kits for their cars are much more expensive. The way out is to repair the damaged part by repairing the crack with your own hands in order to save money. It is also useful for owners of Russian cars to know about ways to restore broken plastic, but not to buy a new element because of small cracks.

Crack Filling Methods

Depending on the amount of damage and the type of plastic, the following cracked bumper methods are practiced:

• cosmetic bonding with acetone and donor plastic;
• gluing with modern chemical compounds;
• fastening on epoxy resin with the use of fiberglass reinforcing mesh;
• sealing the crack with a soldering iron reinforced with a metal mesh;
• welding with a hot air gun and a plastic rod.

Reference. There is one simple method used by car enthusiasts who do not care too much about appearance cars. This is the connection of the edges of the crack with wire or staples from a stapler. This is a simple matter, so consider this technology it makes no sense, everything is clear.

The use of acetone for bonding, which can dissolve many types of plastics, is a temporary measure used for small cracks that appear in the middle of the body kit. Its essence is this:

1. Pieces of plastic, similar in composition to the bumper material, are selected and dissolved in acetone to a thick consistency.
2. FROM back side the bumper crack is degreased and also treated with acetone in order to soften the surface.
3. Liquefied plastic is applied to the damage from the reverse side, after which it hardens for several hours. Outside, the defect can be tinted with a corrector tube.

With the help of thick two-component formulations, sold in two tubes, any single cracks in most types of plastic are repaired. The exception is fiberglass body kits, they are glued together with epoxy resin, and in case of serious damage, reinforcement with fiberglass mesh is used.

With numerous large cracks, breaks and holes in the bumper, gluing methods become ineffective. In such cases, soldering or welding with a hot air gun using a donor polymer material. After such a repair, the defect site is subjected to thorough cleaning and painting in the color of the car. At the end, it is necessary to do a full polishing of the bumper so that the painted area does not stand out against the background of the old coating.

Advice. If you got into an accident or collided with an immovable obstacle and broke through the body kit, try to collect all but the smallest pieces that flew off. This will allow you to use "native" plastic for repairs and not look for something similar.

The preparatory process is little different for various ways bonding and welding of polymer parts, so it should be considered separately. The first question is whether it is necessary to remove the bumper to make repairs. In most cases, dismantling is indispensable, since the plastic must be sealed on both sides. The exception is broken body kits, cracked in many places. They must first be fastened together, and then removed. Otherwise, after repair, the part may lose its shape, which is why the attachment points will not converge, and the gaps with adjacent elements will increase.

Reference. Often the body of the bumper comes off at the attachment points and small pieces of plastic remain on the screws. Before dismantling, such a part is securely welded to the torn mount and only then removed.

To prepare a damaged body kit for repair, you need the following tools and materials:

• a set of keys and screwdrivers for removing the element;
• electric grinder;
• sandpaper of different grain sizes - from P180 to P320;
• degreasing liquid - an organic solvent or white spirit;
• rag.

Note. By using grinder you can clean up better and much faster than manually. This and other power tools that will be needed for painting and polishing can be rented for 2-3 days.

Regardless of whether work is carried out directly on the car or with the bumper removed, it must be thoroughly washed and dried. Then, with a large sandpaper, it is necessary to peel off the paint with an indent of 3-5 cm from the crack in each direction and grind the area with fine sandpaper. Whatever method of repair you choose, the paint must be removed to the base, otherwise it will interfere with the adhesion of the adhesive or the fusion of polymers during welding. At the end, the area should be degreased.

Advice. The quality of body kit repair depends on the conditions in which it is made. It is more convenient to close up damage in a garage equipped with an inspection ditch for easy removal of the part and soldering loose fasteners in place.

Bonding with a two-component composition

To implement this method, you need to purchase the following bumper repair kit from the 3M brand:

• 2 FPRM components for the preparation of a liquid polymer in tubes of 150 ml (price - about 2500 rubles);
• special hard tape;
• self-adhesive reinforcing mesh made of fiberglass (otherwise - fiberglass) 48 mm wide;
• an adhesion initiator in an aerosol can;
• 2 spatulas - wide and narrow;
• stationery knife;
• gloves, goggles.

Reference. Similar kits are offered by other manufacturers, but the 3M brand is the most well-known and proven in practice.

Bonding with liquid polymer is suitable for most plastics and can be performed both with the body kit removed and on the car. True, the second option is rather inconvenient, plus you need good lighting in viewing hole. To cut a crack, you will need an electric drill (not a grinder!) With a mandrel for abrasive wheels. Repair consists of the following technological operations:

1. With a drill running on low revs, and abrasive wheel chamfer at an angle of about 30° along the edges of the crack on both sides. In cross section, it looks like this:<».
2. Degrease the area and allow the solvent to completely evaporate. On the front side of the bumper, where the paint was already cleaned at the preparatory stage, stick adhesive tape along the entire crack. It will serve as a kind of formwork when pouring a two-component solution.
3. Treat the damage site on the rear side of the body kit with an adhesion initiator from a balloon, then apply a self-adhesive glass canvas to the split.
4. Mix the components from the tubes in a 1:1 ratio with a spatula. Apply the liquid polymer to the mesh in several thin layers to avoid air pockets. Lay the mixture until it completely hides the glass canvas.
5. After laying the composition, allow it to cure for 30 minutes, then remove the tape from the front side and repeat the embedding operation (but without the mesh).
6. After hardening, grind the area with a grinder, using sandpaper P180, P240 and P400 in turn. This completes the plastic repair and you can start painting.

Important! After mixing the components, the composition must be used within 6 minutes, which is quite enough to apply to the damage on one side. The curing time of 30 minutes is correct for a room temperature of 21-23°C, therefore, when working in a cold room, it is necessary to organize local heating of the bumper (for example, with an infrared heater).

If irregularities are noticeable on the front side of the element, then before painting, apply a little putty intended for plastic to the differences. After drying, clean it with P1500 sandpaper, degrease and paint with a spray gun, having previously applied a layer of primer. After 1 day, polish the surface of the body kit.

Sealing with liquid polymer - photo

After cutting, manual cleaning of the crack is required The inner side of the body kit must also be sanded Cutting the edges of the crack at an angle Adhesive tape is glued on the front side Glass canvas is glued on the inside From the end you can see how the adhesive tape limits the outflow of the composition outward when applied 2 components are squeezed onto the spatula in the same amount Mixing the components with a spatula The composition is rubbed into the gap and the mesh with a spatula. After hardening and removing the adhesive tape, the sealed joint is cleaned. This is how a sealed crack in plastic looks like

Video instruction on the use of the composition 3M

Repair with fiberglass

The technology is used to repair damage to body kits made of fiberglass, since the previous technique is not suitable in this case. What is required for work:

• fiberglass for bumper repair;
• polyester (epoxy) resin complete with hardener;
• soft brush;
• stationery knife or scissors;
• rubber gloves.

Advice. If a bulge or depression has formed at the point of impact, immediately after stripping, level it using a building hair dryer for heating.

Since fiberglass patches will have to be applied on both sides of the damaged area, it is better to dismantle the bumper from the car. Having completed all the preparatory work, including stripping paint and degreasing, proceed in the following sequence:

1. Using a grinder with coarse sandpaper (P80-P120), make a recess in the body of the bumper from the front side, covering a radius of 3-5 cm from the crack. This is necessary so that the fiberglass overlay does not protrude beyond the plane of the part.
2. On the back side, make a stripping with a large sandpaper, but without deepening. Degrease the area and let it dry.
3. Cut out the fiberglass patches. On the front part, you need to make a neat patch that repeats the shape of the recess, and from the rear, you can glue a rectangular overlay.
4. Mix the resin with the hardener in the proportions indicated on the packaging. Apply the composition with a brush to the surface, apply a patch (you can in several layers) and impregnate it with resin.
5. Accurately keep the time specified for curing the epoxy compound (written on the resin container), then carefully clean the repair area with fine sandpaper. The task is to level the surface by removing the protrusions.

Note. Coarse-grained sandpaper is initially used to create a roughness on the surface of the plastic, which contributes to better adhesion of the polyester adhesive.

On this, the repair work of the plastic itself is over, then cleaning, priming and painting are carried out according to standard technology. The last operation is bumper polishing, it is necessary to give the element a uniform shine.

Photo of fiberglass body kit repair

Video about sealing defects with fiberglass

Soldering large bumper damage

Numerous cracks, breaks and torn off elements of the bumper are repaired by thermal methods, in particular, by soldering. To perform this painstaking work, a small set of tools and materials is required:

• a soldering iron with a power of at least 100 W with a wide tip and a wooden handle;
• thin metal mesh specially designed for thermal bonding of plastic parts;
• knife, wire cutters for processing broken segments;
• screw clamp;
• sandpaper with fine and coarse grain for cleaning seams.

Note. The process of soldering serious defects can take hours. During this time, the plastic handle of the soldering iron will warm up so much that it will become difficult to hold the tool with your hand.

In preparation for soldering, the paint must be removed to the base not only from cracks, but also from torn off pieces of the bumper. Moreover, in this case, the body kit is not removed from the machine until all the gaps are fastened together and fixed by soldering, otherwise the element will lose its exact shape.

Soldering technology is implemented in the following sequence:

1. After stripping, wipe the area with a degreaser and let it evaporate.
2. Align the edges of the cracks and, if necessary, fix them in this position with clamps.
3. With a heated soldering iron, make tacks along the length of all cracks. For high-quality heating, the sting must be immersed in plastic to a depth equal to half the thickness of the material, and then the surface of the molten plastic should be leveled. The distance between the tacks is 1.5-2 cm.
4. When tacks are made on all cracks, it is necessary to put the broken piece in place. Fit it to the hole and, if necessary, cut it so that it fits into the hole flush with the surface.
5. Solder the torn segment on the tacks, then repeat the operation from the inside. After that, the bumper can be carefully removed from the car and continue to work in more comfortable conditions, although this is not necessary, as it is convenient for anyone.
6. Perform solid soldering of all joints on both sides of the body kit. So that adjacent tacks do not diverge from heating, the seam must be soldered with gaps. That is, first the first section between the tacks is welded, then the third, fifth, seventh and so on. When finished, go back and solder any remaining sections.
7. Cut the mesh into pieces 2-4 cm long. They need to be soldered across the seam in the most stressed places - along the edges of the cracks, in the middle, at the junction and near the stiffeners. The technology is simple: a steel mesh is placed on the seam and, heated by a soldering iron, is immersed in the polymer base of the bumper. At the end, the softened plastic above the mesh must be smoothed out.

Important! When soldering the edges of the plastic, you need to hold it still and give it time to solidify. If you release the part ahead of time, the seam will open.

At the end of the soldering procedure, sand the surface of the element, then degrease and paint it in the desired color. During further operation, be more careful, because from a strong blow the bumper can shatter into pieces, tearing in the same places. To fasten it stronger, you should use another method - welding with donor plastic.

Photo instructions for soldering the bumper

All joints are carefully cleaned of paint Bonding the crack with tacks The fracture is now held on by tacks The broken piece is clearly adjusted to the opening The fragment is also fixed with tacks All seams are fixed at several points Completely soldered joints All soldering operations are repeated from the inside of the bumper

How to solder the front body kit - video

hot air welding

This is a more efficient way of connecting polymer parts, used not only for repairing bumpers, but also for restoring a variety of plastic products. It allows you to securely fasten the elements, spending much less time on work than when soldering. To use this technology, you need to prepare the same tools with materials as for soldering, excluding the metal mesh. In addition, it will be needed for repairs.

A chip or crack on a car is a common occurrence for our drivers, largely due to the terrible state of the road surface in our country. If a similar trouble happened to you, then you should not wait and save money to replace the whole glass, just repair it. High-quality repair of cracks on the windshield will not be evident, in addition, there is no guarantee that after replacement you will not catch gravel again the next day.

Why is it necessary to repair the defect immediately?

Usually chips on the glass are formed due to the ingress of spikes and stones of various sizes into it. The amount of damage often depends on the size of the rubble. The reason for the occurrence of a crack is quite often a temperature difference, so the air conditioner in time and the stove in winter should be used quite carefully and feel the measure.

So, if it has already happened that you have caught one of the above damages on your windshield, then experts do not advise delaying repairs. This is due to the fact that after a couple of weeks, small chips can turn into a long and unpleasant crack that will interfere with the view of both the driver and the passenger in the front seat.

Glass repair tutorial video:

First of all, after finding a crack, seal it with tape! This will give you a little more time before it starts to grow, and it will also prevent dirt from getting into the damage, which can even leave a noticeable imprint.

Windshield damage repair in workshops

In the event of damage to the windshield of your car, experts advise contacting a service center. Here they will do everything in their power to restore your car to its former attractiveness. Repair of cracks in the windshield of a car is carried out at almost any service station. For this, photopolymers are used here. This material allows you to restore 70-80% of strength and transparency. The fact is that photopolymers have exactly the same refractive index of light, which makes the repair invisible.

The cost of such a procedure at the service station is quite low, to a greater extent depends on the price of photopolymers that are used for repairs. It is better not to be stingy, since the degree of comfort of the driver and passengers will directly depend on the quality of the repair of the damaged area.

DIY windshield repair

However, contacting a service center is not always rational, since such enterprises usually offer services designed to repair serious cracks. If you need to repair a deep chip or small crack, you can do this procedure yourself. There are two main ways to solve this problem.

The simplest method requires the purchase of a special kit, complete with an applicator. There is no point in buying a kit without an applicator, since it will not be inferior in complexity to a completely manual repair method, and at the same time you will overpay a considerable amount of money. First you need to degrease the glass - for this you can use an inorganic solvent or a special detergent. Try to perform this procedure in a clean environment, such as a garage protected from dust and wind.

The applicator is installed on the glass and fixed with a suction cup - its nose must be exactly directed to the center of the crack or chip. Start injecting polymer resin inside, and it is better to use more than the amount indicated in the user manual, otherwise you risk permanently depriving yourself of the opportunity. After the resin, begin to insert the plunger, dipping it inward until the last air bubbles come to the surface. Use a soft cloth to remove the polymer residue protruding above the surface of the windshield, and stick the finishing film on top of the damage. Now you just have to polish the place of repair and enjoy the result!

The manual method is recommended for use with a complex shape of a crack, the presence of large branches, as well as with its large length. Its complexity is higher and one special set cannot be dispensed with. You will need to purchase the following tools and supplies:

• Injector and bridge. Tools for filling a crack with a polymer composition. For a one-time recovery, you should use inexpensive plastic products;
• polymer composition. Be sure to pay attention to the hardening time, which should not exceed a day. Adhesives for glasses also differ in the transparency coefficient, which must match the indicator of the car - it can be found in the instruction manual or on the manufacturer's website;
• Glass scriber - a tool for cleaning the area around the damaged area;
• Cleaning liquid, degreasing solvent, wipes, wiping material;
• Powerful electric flashlight. Needed to search for air bubbles at the repair site;
• Manual air removal pump;
• Drill with a set of diamond drills. It is used to eliminate the surface stress of the material.

First, wash and degrease the glass, and then deal with the elimination of stress - for this you need to drill holes of small depth at a distance of 1-2 mm from the crack every 3-5 centimeters. You need to drill carefully, trying to expand the crack to the location of the holes being created.

Wash and degrease the glass again, treat the area around with a scriber, and then install a bridge on it, on which the injector will be located. The injector nozzle should be directed exactly to the center of the crack - you can use a ruler or a laser tape measure to position it. Fill the crack with glue and light the windshield with a flashlight, checking it for air bubbles - if there are any, it is worth connecting the pump to the injector and making a few gentle movements to create a movement of the glue and squeeze the air out. After the end of the procedures, remove the equipment and remove excess polymer resin with a napkin. It remains only to dry the place of repair (to speed up the curing of the glue, you can use a medium-power ultraviolet lamp), as well as polish the glass.

What threatens poor-quality repairs

Unfortunately, at present there are a lot of irresponsible specialists who do everything in haste. Automotive cosmetics is a whole science and does not tolerate haste and inattention to itself. Everyone likes to get money, but they don't want to work.

If you arrive, and he says that due to moisture or dirt in the crack, he cannot guarantee positive results, then you should not linger. For a real master who has many years of experience, these are simple excuses. A crack or chip can always be dried and cleaned. The price for such services will be slightly higher than the usual repair of damage, but this guarantees its successful repair..

Before you start repairing the damage, be sure to find out which photopolymer will be used for this. Attention, American materials are not always suitable for our climate. Take an interest in the polymer, if it is overdue, then the crack will open by 99%. Usually repairs with a quality photopolymer cost about one dollar per centimeter of a crack.

It is also worth asking the master what wavelength of ultraviolet lamp he will use to carry out polymerization.

In no case do not settle for sealing a crack with a material such as "liquid glass" or sealant. Cracks cannot be soldered and sealed, otherwise you will spend a huge amount of money on rework later.

Video about windshield repair technology:

A true professional complies with all the norms of the technological process, so the quality of repairs is always excellent. Thus, even if you have already purchased a new windshield, let it stand in the garage, and you visit a good car workshop.

Good luck and no stones in your way!

Glazing elements are the most fragile parts in the vehicle structure. The Avtotsarapina company offers auto glass repair services in SZAO, SAO, SVAO, VAO, YUVAO, YUAO and YUZAO of Moscow. We guarantee efficiency, affordable cost and high quality of work.

Features of car glass repair

The formation of scratches and chips is mainly caused by mechanical damage resulting from the ingress of stones or pieces of ice from under the wheels of other vehicles. Many car owners are in no hurry to remove cracks, scratches and chips on the windshield, especially if they are located closer to the edge and do not interfere with the view. In this case, any damage tends to gradually expand. Over time, any minor scratch can cause the glass to become unusable and need to be replaced. Therefore, we recommend that you repair chips and cracks on your windshield as soon as possible.

It is advisable to repair the glass of a car immediately after receiving mechanical damage. This will save a lot of time and financial resources. If you notice a chip, you should take measures to prevent its development:

• cover the damage with a small paper strip;
• seal with tape to ensure protection from contamination;
• do not turn on the heating and do not direct the stove blower to the windshield;
• try to ensure smooth movement without strong vibrations of the car.

The sooner you start repairing your windshield chips and cracks, the less expensive the procedure will be. For best results, contact a specialist workshop. Employees of the technical center "Avtoscratch" carry out the restoration of the windshield of a car according to a pre-formed effective technology, using high-quality consumables and modern equipment. First of all, experts determine the type of defect. There are several main types of damage.

1. Grout - formed as a result of the hard impact of worn wiper blades, can be eliminated by polishing.
2. Scratch - slight damage to the outer layer of glass. Can be removed with polishing.
3. Chipped - minor damage up to 1 mm deep without through penetration of the outer layer. Auto glass repair is not required in this case.
4. A chip is a serious defect, as a result of which the outer layer of glass breaks through. It can have various shapes (vortex, bull's eye, asterisk, etc.), it requires urgent repair of car windows.
5. A crack is a damage that causes a layer of glass to separate into two parts. Often formed from small chips, in need of repair. Large cracks lead to the need to replace the windshield.

Glass repair tools

After a preliminary inspection of the damage and determining the type of defect, the master proceeds with the repair work. The procedure for removing chips and scratches on a car glass includes several successive steps:

1. Drilling a technological hole. This allows you to remove the internal stress of the material and break the fault lines. This stage also includes cleaning the damage from dirt and completely drying the work surface before removing cracks and chips on the windshield.
2. Filling the chip with polymer glue using a special device - an injector. This allows you to repair a crack in the windshield and mask problem areas.
3. Drying the polymer composition under ultraviolet rays, removing excess glue and coating the glass with special reinforcing compounds.

Repair of chips and scratches on the side and windshields of a car is much cheaper than replacement, and requires less time. The procedure allows you to restore the characteristics of the material, as well as prevent the expansion of damage without harming the performance of the car.

Injector;

The refractive index and degree of transparency of the polymer must be exactly the same as that of the original glass, otherwise the restored area will be very noticeable visually. Before repairing cracks in a car glass, clean the damage from dirt. For this, it is not recommended to use chemical detergents, as they prevent the adhesive from bonding to the surface. Complete drying of the polymer occurs within 7-8 hours.

On the net you can find a lot of manuals for repairing cracks in the windshield, but the most competent solution would be to contact the workshop. Specialists have professional equipment and guarantee accurate performance of all necessary operations, eliminating the risk of causing irreparable damage.

How to order car windshield restoration?

In order to sign up for auto glass repair, just leave a request on the website or call the specified numbers. Our centers are located in SZAO, SAO, SVAO, VAO, SEAD, SAD and SZAO of Moscow and provide affordable prices for services. To find out how much it costs to repair cracks in a car glass, send photos of the damage to our email box, WhatsApp or Viber.

Windshield damage is one of the most common problems car owners face. Modern technologies allow to carry out their high-quality repair. AutoTOTEMM offers prompt and professional glass repair in Moscow.

If you find a chip or crack on the windshield, do not rush to change it, because such damage of any statute of limitations can be easily repaired. Dirt gets into the crack much faster, so in this case it’s not worth delaying the repair, especially since it gradually and inevitably increases.

Most often, a chip on the windshield appears as a result of a stone that has flown out from under the wheel of an oncoming or passing car. Usually such damage does not reduce visibility. The main danger lies in the fact that it weakens the glass and at any moment can become a source of crack development, going radially from the chip in several directions at once. In this case, the windshield may become completely unsuitable for further operation due to a sharp decrease in visibility.

During the repair, Glass Mechanix materials made in the USA are used.

auto glass repair prices

Stages of work

1. degreasing the site of damage;
2. glass drilling;
3. vacuuming;
4. filling the cleavage with polymer;
5. chip sealing;
6. polishing.

What will the chip look like after the repair?

After the work has been done, damage to the glass will become barely noticeable. This applies to clean chips and cracks, so we recommend not to delay the repair.

Examples of work performed:

Windshield chip repair

Chips on the windshield are filled with a special polymer compound that securely glues the internal cavities with the help of an injection tool. To exclude visual distortion of the damaged area, a composition is used that has the same optical refractive index of light as glass, which hardens only under the influence of UV radiation.

Such repairs are most effective at the stage of initial damage, when the chip has not yet turned into a crack, and dirt has not got into it.

How is a chip repair done?

• The central part is cleaned from small fragments and dirt. If the length of the beams is more than 1.5 cm, then drilling is done at the end of each of them.
• With the help of an injector under pressure, the chip and all its small rays are filled.
• An ultraviolet lamp for polymerization is installed on the chip filled with polymer.

It is much easier to repair a chip than the resulting cracks, and even more so this procedure will cost less than replacing the entire windshield of a car.

Windshield Crack Repair

The main trouble of the crack that has appeared is that visibility is reduced. Caused by light refracting at the "border" glass-air-glass. As long as the crack is small, visibility is not much limited, and this does not interfere with driving. However, the second danger immediately lurks - the crack can increase at any moment, or split into several directions. It is necessary to make repairs in a timely manner, until they have increased in size and have not led to the loss of the windshield.

Why can't the damage be completely invisible? There are several reasons that hinder the achievement of the ideal result.

• Dirt and dust trapped in the crack prevent the polymer from completely filling the defect and displacing all the air. Consequently, the air remaining there will create refraction of the media and give glare. In addition, small particles of dirt and dust will reduce the light transmission at the defect site. The sooner you turn to glass repair specialists, the less dirt will have time to accumulate in the crack, which means the result will be better.
• A strong impact often causes local damage or delamination of the middle plastic layer of a triplex car windshield. This cannot be corrected, and in the place of the defect the glass will be cloudy due to the cloudiness of the middle plastic layer.
• Glasses differ in properties, so it is impossible to create a polymer with ideal optical components.

Thus, if you turn to specialists in time for help, you can not only avoid the development of damage, but also make it almost invisible, because removing moisture and dust that has accumulated over several days of driving is completely unrealistic - they will appear after repair and will give out the place where the crack was.

How is a cracked windshield repaired?

• At the end of the crack, if it does not reach the edge of the glass, drilling (not through) is made to prevent its further “growth”.
• Then it is filled with polymer.
• Polymerized with an ultraviolet lamp.
• Excess polymer residues are removed, the repair site is polished.

The first step is to relieve stress to prevent further crack growth. It is then filled with a polymer that has the same refractive index as auto glass. Under the influence of ultraviolet of the desired spectrum (with a certain wavelength), the composition polymerizes and the edges of the crack are reliably glued together.

What to do if there is a crack on the windshield?

It is necessary to immediately seal the damaged area with tape - this will prevent dirt from getting there. IMPORTANT: be sure to place a clean piece of paper under the adhesive tape (this is necessary so that the adhesive from the adhesive tape does not get into the crack). If the crack is clean, dirt, water, any chemicals or reagent from the road have not yet entered it, then the repair will be of high quality, the crack will stick together well and its further development will stop.

Car windshield crack repair can take from one to one and a half hours. Can often be carried out in the presence of the owner - during operation, you can expect readiness in the customer area of ​​our technical center.