"Bob La Londe" wrote in message
news

1/4-20 female insert phenolic handles.

That polymer clay I mentioned for taking gear tooth impressions is
actually uncured PVC resin and was originally developed to replace
phenolic, which contains formaldehyde. I bought a brick to experiment
with its mechanical and electrical properties.
https://en.wikipedia.org/wiki/Fimo
https://en.wikipedia.org/wiki/Sculpey

-jsw