Jim,In my experience, acrylic taps quite nicely using kerosene as a lubricant. I've machined and tapped many custom assemblies from this material. Kero works well on brass as well. No recent experience with polycarb, but I think it would behave in a similar fashion.
Dave Jim Mora wrote:
Hey, I agree! It must be a bitch to tap say acrylics or Polycarbonate walls
_______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla