Wide scar on plastic bumper - how much prep will be needed? Sand, putty or just spray paint and clear coat?
1. First, see if it has damaged the topcoat. If it does not hurt the topcoat, it can be polished to remove the scratches. If the primer is damaged, it is necessary to carry out the painting operation. This is a test of the master's color. Skills, after polishing, then polish and wax.
2. If the scratch is deep and the paint has been damaged, then the paint repair process should be carried out.
First, the first step is to determine the damage and draw the scratched area;
The second step is to grind to the asbestos with 240# sandpaper, and then use the 320# sandpaper to grind the burrs (the burrs are rough edges, the adhesion is large, and the lacquer finish and the damaged position are excessive)
3.The third step: spraying the primer (two components);
https://www.aeroprotools.com/productsdetail/Spray-Gun-h827
with 1.7mm nozzle
Step 4: Spray the topcoat (silver powder + paint + curing agent + thinner);
https://www.aeroprotools.com/productsdetail/Spray-Gun-h827
with 1.4mm nozzle
Step 5: Spray varnish
with 1.4 mm nozzle aeropro hvlp spray gun
Step 6: Polishing and waxing
https://www.aeroprotools.com/productsdetail/Air-Sander-RP7335