zero_zero
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So I've seen some of this Peek material that is pressed. Is the milled stuff stronger than the pressed stuff?
Are the screws tightened against the Peek material? It would seem like you wouldn't be able to torque it down as tight as metal or zirconia. Not sure if this would be a problem or not over the long haul.
Pressed would work for cases which are difficult to mill because of their geometry, otherwise I'd prefer milled...at least you're cutting from a homogeneous stock. I'd say they are par strength wise...milled could be a bit stronger tho. Pressed could be cheaper to produce since you don't have to invest in an expensive disk(s). Peek can flex a lot, so it doesn't have to be strong as a metal bar per se, yet still could function. The screws are tightened against a Ti insert, so it can be torqued down.
the bit that worries me is you glue or press to the cylinders with the bit of flex that comes with peek etc. i can see a fair few of the cylinders working loose.
The flex in the peek substructure does act like a shockabsorber, if it's designed properly will not wiggle the Ti inserts loose...it's said to flex in accordance to natural bone given comparable thickness. Just for a sidenote: peek is also used for structural bone implants and as gaskets in directional drill motors for the oil and gas industry, withstanding thousands of PSI drilling mud pressures.