I have an old Union Cut. fixed blade (like a Marbles Woodcraft but with full tang and slab handles). It's a user, not a collector item, and I'm just partial to it. There are a couple of chips out of the bone handle slabs at the pins near pommel and guard. They are pretty small - about 1/4"x1/2". Any suggestions as to what to use to fill the chipped areas? I thought about plastic wood, but don't know it it would work. Any suggestions from you fellas? Thanks!