rubber

[chevy3755]

i hope this doesnt sound to hokkey....but is it possible to turn ID of semi hard rubber tubbing..........just askin......Larry

[Video Man]

Somewhere I read that they centerless-grind rubber rollers by first freezing the rubber (dry ice?) until it's hard. Might be a clue there....

[Toxic]

I was gonna ask a similar question about machining a counter sink for a bolt/washer in a hockey puck on a lathe..I can do it with my drill press but would probably get better results on my lathe..The part i wasnt unsure of was whether the material being a rubber would grab too hard on the tool/tool holder..Flexing may be more problematic with turning your tubing..

[DR]

i hope this doesnt sound to hokkey....but is it possible to turn ID of semi hard rubber tubbing..........just askin......Larry

Just depends......sharp tooling, hardness of rubber, workholding, etc, etc.

Freezing does help. Grinding can be better, if the work allows.

[mitsue]

I would slip the tubing over steel(mandrel) then freeze it and machine with very sharp tooling.