Ben, why don't you go to an experienced professional machinist with a Big Ass 3 axis cnc? Given enough rpm, 4mm coated carbide cutters, injected coolant and the right feed rates your radius could be milled in minutes. Really.
Everything has a price though.
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- Every great HD crash day is the day before back-up day.
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My Past System
- "Better to reign in Hell than serve in Heaven." - Milton, Paradise Lost.
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