Stripped Thumb Strap Screws

[JimLucas]

Plastic wood is something you buy, use half a milligramme from a 250 gramme pack, and in three or five years time you throw away the well spoiled balance.

A worthwhile point. Though I personally have used it for more than just screw holes in concertinas and have a small can in which the balance is still usable after 20 years (with the can sealed tightly after each use), that balance is still more than half the can. On the other hand, if you have a woodworker friend who uses the stuff, maybe you could "borrow" some.