I have an old Marlin shotgun. Right at the tang area on the walnut stock there is a crack with a small piece of walnut missing. I would like to repair it and try to make it look as invisable as possible. I have some old cut offs of walnut stocks and was wondering if I could use this in a sawdust form mixed with some type of glue to fill the hole. It's y shaped and probably 3/16"- 1/4" at it's widest point. Maybe trying to cut a chip and insert it would be better?