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Showerthought: a stuck ER32 collet nut ate 3 days of my life, so is it the operator or the tooling to blame?
Last Tuesday I was running a batch of 4140 parts on the old Haas VF2 and went to swap an end mill, and the ER32 nut on my holder would not budge. I tried the proper spanner and a bench vise, then soaked it in Kroil for a day, then tapped it with a brass drift, then gave up and ordered a new holder from MSC thinking the threads were galled. Three days of downtime and a rush shipping bill later, my lead walked over, put the holder in a collet block, gave the wrench one hard snap, and the nut spun right off. Turns out I was gripping the holder body instead of the shank and just never getting enough leverage, and I wasted a whole morning blaming the tool. Now I'm stuck wondering if this trade is mostly about learning the right trick from the guy who's been here 20 years, or if it's really about buying better holders so you never fight the cheap ones. Some guys on my floor swear by torque wrenches and never break a nut, others say if you need a torque wrench on an ER collet you're doing it wrong. So which is it, operator technique or just paying up for decent tooling?
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emmap1610d ago
Gripping the holder body instead of the shank sounds like something I'd do too
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