Have had these blanks for a few months but was unsure exactly how to finish them being wood and acrylic. Finally found some advice on here about wiping with BLO and then finishing with a CA application. I grossly underestimated the transparency of the purple blank and am a bit embarrassed at my folly as I am usually very careful to back paint the blank hole either black or a similar color as the blank. Have another one made up ready to go that I back painted the blank hole black. Will see how that one turns out!