Now there you go CW, you just got me to thinking. Hard for me too. ;D I just drilled the hole, and turned the call. After turning, I did a bit of hand work around the edges and epoxied the coin in. But never thought bout filling it in, Heck, I suppose you could drill it, fill it and then turn it. I'll have to give that some though. I would like to see what product you used. Dang, good idea.