polymer for hex key

[UchidaDS]

I am looking to machine a hex key (to tightened metal screw) and have to made out of plastic material.
Is there a recommendation of this material?
I am thinking of Delrin, PVDF or Polycarbonate.

 

[MikeHalloran]

How on Earth did you paint yourself into _that_ corner?


Mike Halloran
Pembroke Pines, FL, USA

 

[btrueblood]

Have to agree with Mike, that sounds like a complete non-starter, unless you are talking about very low torque (relative to the ultimate capacity of the screw). Even then, I'd possibly try a glass-reinforced material in an as-molded condition...but no way would that kind of material be "machinable" (at least not on one of "my" machines.

 

[Jboezi]

I agree that metal is not the ideal choice for a driver (usually a hard metal). I would guess the corners you machine will round over very quickly. However, I can conceive of a number of scenarios where plastic could be appropriate based on torque, cost, number of uses, use enviroment etc. Perhaps, you'd like to share more to help us give a recommendation?

Check this link out. PEEK is expensive but performs well for a plastic. Nylon might be a more economical choice.

Mechanical design engineer

http://www.johnboezi.com

 

[UchidaDS]

Thanks! Tried Peek.
I think it is more to how the operator use the tool too!