Task: Make a needle-valve retainer spring.
This is the little gizmo that goes on a model airplane engine needle
valve, and engages the straight-knurled base of the needle to prevent the
thing from vibrating around.
So -- I'd like to anneal, form, then temper. Any guidance? I've tried
annealing steel music wire, and even though I'm pretty sure that it's
just plain carbon steel, it's so thin that it tempers in air. How does
one anneal thin carbon steel sheet? Or do you just try to draw it until
you can bend it, then re-temper?
The spring needs to be a square "U" shape, with a hole in the bottom and
the top arms formed into shallow "V" shapes to engage the needle valve
Thanks in advance...
- posted 9 years ago