Ran the same 4140 shaft job for 6 years with a file and calipers, then a guy in Wichita showed me a $40 edge finder trick

Jade Chen · 2026-10-16T21:00:04.060702+00:00

For 6 years I eyeballed my offsets on 4140 shafts with a file and calipers, then last month an old hand in Wichita showed me how to touch off with an edge finder and a 0.100 shim so I stopped scrapping 1 in 20 parts, and now I want to know what other cheap habits you all swapped out that made a big difference.

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Ran the same 4140 shaft job for 6 years with a file and calipers, then a guy in Wichita showed me a $40 edge finder trick | CNC Operators - Librear