Here is another progress report for those of you that are following this project.
I was able to add the blade slots this past weekend on the 4th & 5th.
It took 18 passes on each frame with a .140 diameter carbide mill to reach the final slot depth. I had to alter the mill in the surface grinder by spinning the .1875 shank to under .140 to be able to achieve the final depth. With that much of the mill protruding from the tool holder, and the spun shank I was pleasantly surprised the one end mill made it through the entire lot of 20 pieces.
I'm not sure if you can see it in the pics, but these slots are cut along a radius, meaning the X, Y, and Z axis of the machine were moving simultaneously.
So here are a couple of pics...enjoy,
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