Contents: Putty 🠛 Coloring 🠛
Putty
Puttying before painting allows you to restore the geometric surface of the body panel being repaired. There are many types of body putties, but the best one works best with a hardener, you just need to strictly follow the manufacturer's recommendations. Putty is applied with a flexible rubber or plastic applicator. Mix a small amount of putty on a clean wooden or cardboard surface, using the hardener sparingly.
Apply putty in the following order.
Prepare the metal surface as described above.
Prepare the putty according to the manufacturer's instructions.
Apply filler to the damaged area of the body panel using the applicator. To achieve the desired surface contour and filler level, each stroke of the applicator should go through the entire repaired surface. As soon as the contour of the filled surface approaches the contour of the undamaged surface, stop applying the filler immediately, as it will begin to stick to the applicator as it hardens, forming lumps and leaving burrs.
Apply layers of paste at intervals of about 20 minutes until the level of the putty surface becomes slightly convex above the surrounding metal of the panel.
Allow the treated surface to dry and harden completely.
Remove excess putty with waterproof sandpaper: first with coarse-grained type N-180, then, gradually decreasing the graininess, finish processing with sandpaper N-600. It is recommended to use imported materials due to the higher quality of the abrasive and lining.
For best results, it is recommended to pre-wrap (or stick it on) paper around a wooden block (you can use rubber or foam).
During the processing, regularly and generously wet the sandpaper with water. Continue the work until the surface being processed is absolutely smooth.
At the final stage, the treated surface should appear as a disk or oval of clean surface, ending with a gradually tapering edge of well-preserved paint.
Rinse the treated area with plenty of running water to remove any fine abrasive particles formed during the sanding process.
Dry, degrease and dry the surface again with a hair dryer.
Apply a thin layer of primer from an aerosol can, thus revealing all the defects made during sanding.
Eliminate any defects found by applying a layer of fresh putty.
Repeat the sanding and polishing step.
Repeat the steps of filling, sanding and priming until you are satisfied with the result.
Finally, rinse the treated surface with running water and dry it – now the surface is ready for painting.
Coloring
Painting of the panel surface should be carried out in a dry, clean and pre-ventilated room. The air in the room should be dry, clean and still.
Carry out painting in the following order.
Select the area of the panel to be painted; cover the rest of the surface with thick paper secured with adhesive tape. Leave an undamaged area of 50 mm wide open around the perimeter. Use thin paper (newsprint) in several layers.
Before painting, test the spray gun or aerosol can on an auxiliary surface (cardboard) and practice the coating application technique.
Prime the surface. The required thickness is achieved by applying multiple thin layers of primer. Dry the surface to be treated before applying each layer of primer.
Sand the surface with N-600 water-resistant sandpaper, using plenty of running water. Achieve absolute smoothness of the surface.
Allow the soil to dry completely.
Apply a layer of paint, again achieving its thickness through several layers (3–5). Apply layers "wet on wet", allowing the previous layer to dry slightly.
Start painting from the center of the area being repaired, moving your hand with the sprayer (with a spray can) in a spiral, expanding the radius of action until the entire damaged surface is covered, as well as a ring of the surrounding surface approximately 50 mm wide.
After 10-15 minutes, no later than after applying the last layer of paint, remove the paper and adhesive tape covering the body panel.
The paint is finally drying (polymerizes) within two weeks.
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Only then begin to level out the color transition by treating the restored surface with a very fine grinding paste.
Finally, apply a layer of wax coating AB-70 to the restored panel. If less than 4 years have passed since the body was painted, then you can use car polish.
If after using the specified technology it was not possible to achieve satisfactory results, you can use the grinding paste of the PMA-2 brand. If this does not help, then you will have to completely repaint the body. Repeated use of PMA-2 paste is not allowed.