Without welding, we patch huge rusty holes in the body quickly and cheaply

Owners of old cars are faced with the problem of rusty holes appearing on the sills, arches and doors, which greatly spoils the appearance of the car. In a good way, such places should be cleaned and welded, but for this you need to have electric welding or extra money to pay for the work of a bodyworker. If you don’t have any of this, but you don’t want to drive a rotten car, then you can solve the problem yourself very cheaply and quickly. We offer a simple but temporary method of cosmetic body repair.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Materials:


  • degreaser or solvent;
  • polyurethane foam;
  • masking tape;
  • starting and finishing automotive putty;
  • aerosol automotive primer, paint and varnish.

The process of repairing and painting rusty holes in a car body


The first step is to completely cut off the rotten metal and clean the body in the damaged area.
Without welding, we patch huge rusty holes in the body quickly and cheaply

If this is a rotten threshold, then you should place cardboard underneath it, creating a restriction, and foam the entire hole with polyurethane foam.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Without welding, we patch huge rusty holes in the body quickly and cheaply

It is important to blow out as much foam as possible, starting from the top, to ensure there is enough contact area for a secure adhesion.To make it compact, you should support it with cardboard and let it harden.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Without welding, we patch huge rusty holes in the body quickly and cheaply

When the foam dries, you need to cut it with a sharp knife, giving the shape of the plane of the missing part of the body. Then you need to polish the remaining saffron caps, under which there is still living metal.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Small completely through holes on the doors are left, they just need to be cleaned to a shine.
Without welding, we patch huge rusty holes in the body quickly and cheaply

After this, you need to separate the part of the body being repaired from the normal one with a strip of glued masking tape.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Then the surface is degreased and puttied with epoxy putty, preferably with fiberglass.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Where there is a through hole in the doors, putty is applied on both sides. It hardens quickly, so it should be applied quickly, roughly and in excess.
Without welding, we patch huge rusty holes in the body quickly and cheaply

The dried putty surface is sanded. After processing, it needs to be puttied again, but with finishing putty, and when it has cooled down, then sanded with zero to perfect smoothness.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Without welding, we patch huge rusty holes in the body quickly and cheaply

Having completely restored the surface of the body, you should cover the molding with masking tape and cover the wheel near the area to be repaired with thick cloth or film. Then the restored area is degreased and covered with primer from a can.
Without welding, we patch huge rusty holes in the body quickly and cheaply

When it dries, the roughness that appears is sanded with zero-grade sandpaper. After this, paint is applied in a thin layer. It is better not to spray a lot of paint at one time to avoid smudges. When it dries, if necessary, apply a layer of varnish.
Without welding, we patch huge rusty holes in the body quickly and cheaply

If the paint and varnish materials were chosen to match, then it is very difficult to notice that the body in this place was repaired, even if you look closely. This method is extremely simple, but less durable than welding repairs, but the car will look intact and well-groomed for a season or even several.
Without welding, we patch huge rusty holes in the body quickly and cheaply

Without welding, we patch huge rusty holes in the body quickly and cheaply

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Comments (11)
  1. I
    #1 I Guests 26 April 2020 18:50
    14
    outbid
  2. Dmitriy
    #2 Dmitriy Guests 26 April 2020 19:23
    16
    Well, if the car is for sale, then yes.
    foam absorbs water, so after a goal or two the problem will get worse.
    It’s easier to take a fine mesh, preferably brass. Crumple and push inside, then putty and continue according to the text.
  3. Sasha
    #3 Sasha Guests April 27, 2020 00:32
    15
    And then, not beaten, not painted.
  4. Guest Igor
    #4 Guest Igor Guests 27 April 2020 07:41
    10
    And quickly to the market. This is how damaged/damaged cars are sold, and the new owners end up with a lot of problems.
  5. Vic
    #5 Vic Guests 2 May 2020 21:37
    12
    the foam will not absorb anything if everything is done well, where will the foam absorb water if everything is isolated.
    Usually the opinion is that the foam absorbs because when the putty falls off, rain pours in there, and usually such owners delay repairs for a long time, and when everything falls off, oh my God, the foam absorbed the water and ate the body.
    We dismantled old German buses, their backbone is made of profiles, the inside of the profile is filled with foam, and nothing rotted, the profiles are like new!
    1. Max
      #6 Max Guests 16 May 2020 14:59
      4
      Perhaps this means that if there was moisture there before frothing, then it will remain there. and will cause corrosion. Although foam absorbs moisture from the air during polymerization. driving some sort of catalyst for her. But this applies to ordinary mantle foam. There are other types of foaming agents.
    2. dlorpav
      #7 dlorpav Guests 30 July 2020 19:04
      2
      Well, there is already rust inside the cavities and arches and there is no way to remove it, the foam does not protect against corrosion and still retains moisture, contributing to further accelerated rotting of the body.
      There is no point in such repairs, even outbid. the buyer today has gone literate, often with understanding friends and various instruments to determine the thickness of the paint and the integrity and integrity of the metal. so with foam in the sills and arches it’s already difficult to sell a car. I worked at a hundred for 34 years, I’ve been doing body work for 25 years, I’ve seen it all. there is nothing more permanent than temporary. and “you can weld me here, but at home I’ll wire it tight”...
  6. Sergey
    #8 Sergey Guests 26 May 2020 04:52
    5
    The foam won't absorb anything. The body continues to rot due to the fact that the metal was not properly processed! I glued a fiberglass threshold onto the foam, and after 4 years when the capital had to tear everything off, the foam and metal were in perfect condition. The metal in the place of corrosion should be thoroughly cleaned of rust and covered with primer, and then with foam or fiberglass. But the problem is that if the metal begins to rot from old age, then nothing can save it. You need to cut out a large piece around the “saffron milk cap” with a margin.
  7. Guest Alexander
    #9 Guest Alexander Guests July 7, 2020 05:01
    3
    I've seen cars where the entire rear part is made this way
  8. Guest Alexander
    #10 Guest Alexander Guests October 2, 2020 09:23
    0
    What’s not to like about car plasticine with a rye converter - you don’t have to cut anything out and clean it, seal it up (20 degrees C), level it with a knife, cover 2-3 layers of titanium with increased adhesion, dry it for 2 days and paint it - definitely nothing will rust for 10 years!
  9. kiv69
    #11 kiv69 Guests 8 June 2022 09:45
    0
    In this case, it’s just the owner..., a cheap mudguard would have allowed him to avoid this hole, and the hole rotted out in less than a year, it’s clearly been ridden with rust for several years.