Posted by Dean [75.54.238.7] on Thursday, June 12, 2014 at 22:15:36 :
In Reply to: I'm supposed to do what!? posted by Desoto61 [138.162.0.43] on Thursday, June 12, 2014 at 07:48:48 :
If you are using a high quality clear like PPG brand you really need a high grade gun to shoot it. There clear is not like the cheap brands, it has a greater amount of solids and a low grade gun won't atomize it into a fine spray. You really need to watch your dry time between coats also. A problem with runs and to thick of coats is the solvents can't get out of the paint and so gets trapped, what they call solvent pop. Solvent pop shows up after the sanding process where you take the top layer off the solvent bubble. Then the hole fills up with sanding material or compound and polish. Now you will see a white spot, many of them denoting trapped solvent. Unfortunately there is no way to fix this condition but to completely sand them out and re coat. You can buy aluminum "run blocks" small sanding blocks with different contoured edges to work out the runs with paper. If you do have solvent pop because of the runs or to thick of paint you should see it after sanding if you use a flash light on the dry surface. Good luck, it can be an expensive learning experience is it is solvent pop.