I masked the sign with contact paper first, vcarved the letters and then painted. After the paint dried I pulled the contact paper off.
Do you finish your sign blank with a clear-coat first, then lay the contact paper on the dried finish, next engrave, and finally paint the engraved surfaces? Is there a problem with paint running under the contact paper? What type of varnish or shellac or polyurethane do you use for the clear-coat? If not clear-coat first, how do you keep the contact paper firmly stuck to raw wood while engraving?
I've tried several variations on this "paint the letters" process, but with limited success. Any help would be most welcome. Thanks.
Sorry I missed this post.
The process I generally use is what you posted.
Paint blank desired color.
Multiple clear coats. Let dry hard.
Mask blank with contact paper.
Paint design, let dry hard.
Pull off contact paper.
Sand clear coat with medium/fine sanding sponge to remove any runs under the mask. (This is the reason for the multiple clear coats)
I use the thick sanding sponges from Do it Best hardware~ 1"x 5" x 3".
Finish with clear coat.
With this process all my designs have sharp edges for the lettering. The great thing about clear coat is that after the sanding to clean up the letters the final coat will fill and hide all the sanding marks.