No surface treatments. Cutting articular cartilage, cortical and cancellous bone. I'm still not convinced how often we are seeing dullness that was induced by direct cutting of the tissues, but that doesn't completely obviate the need to assess the sharpness if only to say that we do/can as...
CCW as illustrated in the picture, yes.
Torque/load to cut may be an option if we can identify a suitable medium that doesn't in itself cause undue abrasion. Will have to kick that around.
One thing I intentionally didn't mention since it's related but presently out-of-scope, is that the alloy...
We have some custom stainless steel tools with hole saw type geometry where the cutting 'tips' are not of a standard geometry--it has a scalloped leading edge which creates two sharp 'peaks' at the innermost and outermost edges:
These items are intended for limited re-use, but we would like...
Thanks for the suggestion, although this might be harder to 'sell' since some may ask "is that [surgical] stainless steel?" -- if we can say "Yes, it meets chemical requirements of ASTM F899" then great, but...:confused:
All materials in this equation are nominally 316L; the form of the actual raw materials is not specified on the drawings, however, according to the material certs, the 'new' (non-magnetic) plate was made from 1.5" smooth turned cold-finished round bar; the 'new' mating post appears to be made...
So, we have some machined parts of somewhat dubious history where the drawings indicate the parts are 316L but due to the fact one of the components exhibited ferromagnetism and was not galling in a same-material pair, we suspected the material may actually be hardened 400 series (e.g. 416/420)...
The reason is so people like me, when opening a drawing for the first time and having no idea of the revision history... are left to wonder if there is something important associated to that bubble with a letter in it.
On an associated note: unless it has improved in the last few...
Since you are already relying on CAD model, just omit any 'points' along the path and force them to choose. If they ask which points they need to measure to know if the part is acceptable, then fire them. "Which dimensions are critical to meet specification? [ponder]" "All of them" [flame]
I lean towards the "useful" in the sense that it beats into the [idiot] reader's head that partial threads don't do me any good but you are fine to have as many as you'd like past where there are full threads. Generally, though, I find I'd care to use a note like that where I know the hole depth...
