Re: worm drive - a bit more

Ian wrote:

>So I made a steel 'wormwheel' using a small tap - hardened and
>tempered it, and used it as a knurling wheel. The finished result
>was almost identical to the remaining original screws.

Cool! Thank you for the info! I'd seen these knurls on older tools,
and hadn't been able to find any source for the knurls...

Ballendo (learnin',learnin', learnin')