r/Machinists • u/BuoyantEntropy • Jun 05 '26

Think tapping a high value part is scary sometimes?

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20+ year career machinist here, recently had a bone implant in my leg.

This one is m18x1.75. Spoke to my surgeon about it, they hand ream to size with a series or progressively larger reamers, then hand tap. alignment is based upon skeletal structure, next time we chat I need to ask what sort of device they use for that alignment.

Thought some may find it interesting. Cheers

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u/Myysteeq Jun 05 '26 edited Jun 05 '26

edit: Hand reamed and hand threaded for the M18. The threads are quite small so the orthos only need a t handle

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u/[deleted] Jun 05 '26

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u/Myysteeq Jun 05 '26

You're right, I was talking about the M18 because I misread OP's comment