Huh, when I saw them rough out the ball shape, I figured the next step would be a pivoting sphere turning jig, like I’ve seen on wood lathes. I didn’t expect the tilted rotary table/fly cutter solution. I assume that’s easier, given they’re machining stainless and not aluminum. I guess I’ve seen too many Clickspring videos, with hand tools on soft metals chucked into a lathe.
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