Hey @RobinBennett, I was attempting something in the same vein (white background black text / epoxy) over on this thread, Woodworking finish order of operations question and @timonjkl and @thejat suggested laying down craft paper or shelf liner before carving and using a coat of shellac to seal up the wood to prevent staining. I just finished a project (towards the bottom of that thread) that turned out pretty good. Since my primo/shed is outdoors unheated, I would bring a 5 gallon bucket of hot water out there and soak the epoxy for about 15 minutes before mixing and pouring, I found that greatly helped the viscosity and helped with slow stirring to minimize the air mixed in kept the air bubbles down.
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