I'm in the middle of refinishing a guitar. Base paint is on and I have applied 3 coats of clear coat and started wet sanding. I started with 800 grit to get the surface free of orange peel but when getting to where the orange peel is gone I started seeing traces of the base color in my sandpaper. This indicates that I've sanded through the clear coat and reached the paint. I'm not applying a lot of pressure and yet still seem to be going too deep. Maybe I didn't apply enough coats of clear coat? At this stage, after getting the surface smooth I am reapplying clear coat to try again because it didn't make sense to continue wet sanding with the next grade of paper if I'm through the clear coat. How far do you sand with the coarser grade of paper before going to the next finer grit? Do you take the surface to where there is no orange peel with the first grit or do you just sand so far and let the successive grits do the job? This is all new to me. So far I've put on another 3 coats of clear but should I do 4 (or more) to avoid sanding through again? I don't want to go through the sanding process again only to have the same thing happen. How may coats of clear coat is enough? How many is too many?