How long should I wait, after spraying on a pre-cat finish, before using a nib file on small imperfections?
From contributor D:
The fact that you even know that these things exist indicates that you have some background in automotive painting. With wood finishes they are not as effective since the finishes don't get nearly as hard as acrylic urethane. Nib files, which are special tools made by Steck, work best on truly hardened clear coats where they perform a shaving action to remove the run. On wood finishes a piece of 80 grit adhesive file board paper stuck to a small piece of MDF works pretty well. If it gums up, you throw it away and get a new piece.