Small Holes (Speed)

The closest example I did to what you describe is this:

HDPE is butter, in that example I’m straight plunging at 60ipm (if anything, plunging too slow is the problem, in soft plastics).

O-flute is a specific type of single flute designed to curl up chips, for milling plastics. The shape/rake angle is specific, and it’s super sharp.

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