Here are some ideas from another thread. I have been using shellac with pretty good success. It’s good to coat with shellac, sand perfectly smooth, coat with shellac, sand to almost glass, then, paint.
I tape off as much of the area that doesn’t need to be painted so that I don’t have any more sanding than what is needed. I also use the lacquer to close the grain before painting. I just happened to publish a video of me making a plaque using this technique. Making a Team RWB Plaque
am I thinking crazy thoughts, or has anyone every gotten a dispenser, like a syringe, with a fine tip, filled it with paint, and squeezed that into their carving areas? I’m working on a few pieces that have multiple colors, and got my brain thinking of easy ways to do multiple colors without waiting on others to dry and re-taping and re-sanding
I’ve done that if the interior of the carve is rough and I don’t feel like sanding it. By injecting enough paint to flood the interior, it creates a smooth surface, which you can even bring flush to the top if you want. Just make sure you account for the longer drying time.
Various epoxy companies sell syringes. I used these to squirt silica thickened epoxy into the seams of the 8’ pram I built.