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@foundthefault@tech.lgbt

Post #2206874

2026-03-26 01:30 UTC

@deviantollam@defcon.social I think people are turning down this job because it's a bastard thing to make. If the ball is at most 1/8" wide that necked down section looks closer to 1/32" proportionally. It's not very strong to resist machining forces. Think about a (non-hardened) rod stock that size, you could just bend it with your fingers. This feels more like a tool making process. It reminds me of a ball burr with no cutting edges on it. I wonder if you could get a tool company to make some that way or grind one smooth. Could this be done with SLS 3D printing instead? What kind of forces are this thing going to encounter?

Replies (1)

  • @foundthefault@tech.lgbt @deviantollam@defcon.social Maybe friction-weld a tapered shaft to a bearing ball? If I were trying that, I'd spin my lathe at 2K RPM max speed in one direction and have a fixture for the ball going 12K RPM max speed in the other using my toolpost grinder, and hope that 14K RPM difference was enough. But I've never friction-welded metal, only plastic.

    Open ##2206875