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Here is the CAD drawing showing the layers relevant to the milling operation.
With the part mounted on the fixture, a 5/16" endmill is used for roughing and finishing. For roughing, we only need to keep away from the lines while milling out the bulk of metal in the pockets.
For finish machining the perimeter of the pockets, 2 passes were used with Radar Mode to keep away 0.005" on the first pass and then 0 on the second pass all the way around to finalize the dimensions.
We left the angled lines for last. The display computes the angle of the line and rotates the geometry so the line is parallel to the axis of my choice. The angle is communicated to the rotary table and it moves automatically to the required angle that is dictated by the CAD model. Then the finish passes can be made on those angled lines; and the visibility of the graphics allows you to get excellent corner blends without undercutting.
Machining complete in about 90 minutes. It will go much faster with a proper roughing endmill and more practice. Also chip and coolant management slows it down.
Done. All dimensions came out +-0.002" and many were much closer. Without even trying and no in-process measurements or adjustments.
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