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Can we talk about how I used to dial in tools by ear until a crash in Tucson cost me $600?
For 4 years I set my offsets by sound and feel, just trusting my gut on the Haas. Then a roughing end mill grabbed in some 6061 and scrapped a fixture plate, which ran me about $600 in material and downtime. Now I write every offset down and check it twice with an indicator before I hit cycle start. My old lead told me ears lie but numbers do not, and he was right. Anyone else here switch from trusting your gut to actually keeping a log?
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raymitchell8d ago
There was a study I read about a while back on how experienced machinists lose their hearing range over time, and it said the guys who relied on sound the longest had the worst accuracy when they hit their 40s. That stuck with me because hearing damage comes on so slow you never notice it happening. Add in a loud shop, other machines running, and bad coolant flow, and your ears are basically guessing half the time. Numbers on a sheet do not care if the guy next to you is running a grinder. Writing your offsets down costs you two minutes and saves you nights like that Tucson one.
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