Hey, ZK! I actually thought the 3D files I received earlier today were from you for a while, so you certainly get full credit–But I am happy to say that I was able to make a drawing from a Rhino3D model that Chris Kuether kindly sent in.
Now we’re waiting to hear back from a few shops with the ability to machine tungsten. The best so far would need to add radii of curvature of .004″ to a piece of 99.95% tungsten. Chris also added
DMLS might be practical [Direct Metal Laser Sintering] .. fused from tungsten powder, just locally. Practically zero scrap.
So we’re open to further suggestions for a place that can do DMLS with tungsten or otherwise has some W expertise (assume we’ve already checked out the top few Google hits). The earlier simple knife edge was quoted at just a few hundred, so it will be interesting to see how much 96 sawteeth adds to the cost.