Through holes from corrosion on the body of the car spoil the appearance and cause a lot of trouble to the owner. In order to close these holes without the use of welding, two methods are most often used. One of them is characterized by simplicity and availability of execution, the other - by reliability and durability.
It is necessary
- - fiberglass and epoxy adhesive;
- - Metal sheet;
- - high power soldering iron;
- - a hammer with a wooden head or a hammer and a wooden gasket;
- - sandpaper;
- - acid rust converter;
- - putty, car enamel;
- - White Spirit;
- - two-component acid (phosphate) soil;
- - two-component acrylic primer
Instructions
Step 1
For the first method, use fiberglass and epoxy glue (resin). After cleaning the area around the hole to bare metal, treat the surfaces with a rust converter. Apply a fiberglass patch on the back of the body. To do this, cut out at least 3 patches: the first should exceed the size of the hole by 2-3 cm, the second should exceed the size of the first by 3-4 cm, the third - the size of the second by 5-6 cm.
Step 2
Saturate each patch with two-part epoxy adhesive and apply to the hole on the back of the body. Before gluing each subsequent layer, wait until the previous one is completely dry. After completing all layers and thoroughly drying, from the outside, clean and level the surface, putty, priming and painting the body.
Step 3
To use another method, cut out a patch from a sheet of metal that exceeds the size of the hole by 20-30 mm. Pre-clean the surface area around the defect, treat it with a corrosion converter. Be sure to perform tinning on both the patch surface and the repaired surface on the back of the body.
Step 4
Solder the patch from the inside of the hole with a powerful soldering iron. Use an acid rust converter as a flux. Make the soldering circuit solid. Thoroughly rinse the surfaces to be repaired after soldering work.
Step 5
Measure the patch from the outside of the body. If it protrudes from the surface with a bubble, drown it by applying light, frequent blows with a wooden hammer or through a wooden spacer. When receiving a dent, level it with a putty so that the thickness of the putty layer is no more than 3 mm. Sand the surfaces with coarse sandpaper before filling.
Step 6
Determine the area to apply the mat to the eye. In any case, it must exceed the area to be putty. Apply the adhesive line to this area with coarse sandpaper. Degrease the sanded surfaces with white spirit, removing dust and dirt at the same time.
Step 7
Start applying the primer immediately after degreasing. Dilute the two-component phosphate (acidic) primer in a glass or plastic container and apply first. If desired, use an acidic primer from a spray can. Use it in one layer, being careful to avoid smudges.
Step 8
After 15-20 minutes, apply a coat of acrylic two-component primer. In total, carry out 2-3 such layers with an intermediate drying of 10 minutes. Apply primer from a spray can if desired. Dry the soil layers for at least 3 hours. Use forced infrared heating to shorten the drying time to half an hour. After all operations, putty, sand and paint the repaired area.
