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Originally Posted by Joe Johnson
Thanks for pointing this problem out.
This is one of the trickiest parts to make.
The part is hard and the wall that is left is very thin*. The machinist needs to take very small cuts with a carbide boring bar or (my perference) you need to find a good wire EDM source.
Joe J.
*in fact it was so thin, there is no engineer I trust that says it should work, I myself doubted it would hold up, but thankfully, testing is the ultimate authority.
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This is what we do. we have this cut and we remove the planets and the four smaller holes go on those little shafts that the planets had fit to. plus if you mess up this piece you can just cut another one. we have had no problems with this mount (on eight drive platforms) at all! now as far as machining Dr. Johnson is correct these should be cut with a wire EDM or a water cutter works for these disks.