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I'm trying to polish my car after a fresh paint job and i having problems. I have a Nothern Industrial variable speed polisher and 3M's Perfect-It rubbing compound and polishing glaze. I'm using 1000 and 2500 grit sandpaper then trying to polish. When i'm finished i still have some sanding and swirl scrathes. Am I doing something wrong or is there another step.
Not meaning to be a smart ***, but I'm assuming you are talking about wet sanding and using a soft block? Anyway, the step from 1000 to 2500 is too big, the 2500 won't take out the scatches the 2500 puts in... Might want to add some 1500 then some 2000 between the two grits you have now... As for the swirls, either excess material or material residue.... Make sure all the rubbing compound is off the surface before you use the glaze... After the glaze you could try some polishing compound, then if necessary a swirl eliminator, then some hand glaze... If it was cheap and easy, everybody would be doing it.
I'me sure the pro painters will be along with some other reccomendations to resolve the issue....
How fresh is the paint? If it's clogging on the paper then that is what is leaving scraches. Use some liquid dish soap and water in a spray bottle and wet the area you are sanding. If you get little bumps of paint on the paper disgard that paper. Wet the paper with the spray bottle also.
How big of a jump in grit is too big? Can I go from 1000 to 1500 to 2500?
yes you can go from 1000 to 1500 and finish off with 2000 then cut and buff
Thanks to everyone for the help.