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Long time Classic guy with no or little Corvette experience. I have been ask to buff a Single stage urethane paint job on a 73 that was abandoned before done. The car was stripped and gel coated with 2k primer next. I am unaware of any sealer.
The problem is that I have found very visible scracthes that won't seem to sand out. I am afraid to color sand any more as I have already resorted to 600 grit as an attempt to remove them only to see the same scratches remain. I fear I am about thru the color coat.
I have been told that fiberglass "moves" and that the scratches are nearly impossible to eliminate. I don't won't to accept that. They seem to be a visual thing rather than an actual flaw. Could the fiberglass absorb the pigment to creat an illusion of a scratch where there is none?
My only coursee of action seems to be to spray more color in the area or possibly Clear the whole car.
Please help educate me as this fine car deserves better than I am giving so far.
Any chance you can get them to show up in a photo? Are they scratches in the topcoat or could they be deep sand paper marks in the primer and the topcoat has sunken into but not filled? Is the color a metallic on solid?
They seem to be a visual thing rather than an actual flaw.
Originally Posted by lrisner
They appear to be in the primer.
If they are in the primer they are a flaw. There are different techniques to body work and most body men learned from a production environment where speed is important. That said, body repairs are made and filler or fiberglass is sanded with course grits that cause deep sand scratches. Those deep scratches are typically filled with primer and sanded out. Depending on the "eye" of the worker, some of those scratches get overlooked especially on larger jobs such as a full repaint.
You can't eliminate those scratches unless you sand the topcoat surface flush with bottom of the scratch which is not feasable because you would sand through the color. Being a solid red, you could fill in the scratches with the original 1k paint using a pinstripe brush, then wet sand smooth and polish.
You can't buff out crappy prep work ,I have seen it happen when a poly primer like Feather-Fill was not used ,everything sucks up .The shop I (used to )work at didn't Feather-Fill and everytime the paint would shrink .In an effort to lower cost on materials it cost them on re-buffing .I left because of this reason ,and many more .One gets tired of being blamed for anothers short comin's.