pic: 3 CIM WCD Ball Shifter CAD

[asid61]

Originally Posted by nathannfm

Ah, this clears it up, most of that webbing was not visible in the original render and that makes me much happier about the support of the CIM.



This sounds like a good idea but I would caution that you should know the tolerances of that boss and the tolerances of the equipment used to cut the hole in the plate. We made our first waterjet part ever a few weeks ago with a 0.750" hole for the boss and suprise suprise it comes back and the CIM won't fit.

+1. Use the boss. If you just use screws, then the cim can wobble more than a couple thousandths and lower efficiency. The boss should be used.
We used 0.752" without problems last year, allthough it was sort of by accident- I plunged with a 0.75" end mill in place of a 5/8" and thought I screwed up. But it fit perfectly!
So plunging in with a good 0.75" endmill produces an almost-perfect hole, although boring or even better over-sized reaming would be preferred if you can manage it. They have 0.751" reamers on the market for a really good fit.