Just my experience here. I finished an order this week that involved orange swirl blanks from Beartooth woods, AA 303 as I recall, and the kits were Sierras. The first batch I worked up I painted the tubes white with Rustoleum gloss spray paint. Through the ends of the finished blanks you could see where the thick CA I used covered the tube and where it didn't It looked like weird swirls. This was not objectionable to the client so we let it go. On the second, and final batch, I repeated the a fore mentioned process and, painted the drilled hole in the blank with model plastic paint, white gloss, applied with Q tips. The finished blanks now showed a "lumpy" sort of beaded surface on the tube at each end of the blank. Again, not a problem for the client so the deal is closed. I, however, am not pleased with this issue. The paint, in all cases, was allowed to dry/cure for at least 2 days. I have tried epoxy with similar results. My conclusion is that, if the blank material is transparent enough, and this includes nearly all plastics, what ever is inside the drilled hole will be visible under close scrutiny. I don't have an answer for this unless one is to stick with wood blanks and avoid the plastics. Solid surface counter material is an exception to this.
Does anyone have an idea, that has been tried and proven, to solve this? If so. please enlighten us. Thanks
WB