I have a pair of minature reading glasses (don't mock - it will happen to you eventually) and they come in a tube with a "flip-top" lid.

Sods law - hinge pin drops out, spring goes "ping" - gone for good.



Beacause I'm a tight git I've made a new spring out of a biro spring but in doing so it's lost a bit of "body" and I was wondering if heating it up and cooling it quickly would help it...

Any ideas from the engineering community ???

ATB Toby