We’ve had an email from Jack:

Probably a long shot but i was wondering if anybody could think of any uses for old bits of worn-out sandpaper (i.e. once that have passed their optimum sanding potential). I’m a carpenter and go through loads of the stuff!

A good question and for once I’m completely stumped – I can’t think of anything. Recycling is probably a troublesome too.

Any suggestions?

(Photo by Simon Eugster)