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Used to think wear bars on cutter teeth were a sales gimmick...
I laughed when my old foreman told me to swap teeth the second I saw the wear bar. Thought the guys pushing those tungsten bars just wanted me buying more steel. Then I ran a job on the Missouri River near St. Louis last fall where I pushed a set of teeth 8 hours past that bar. Lost almost 40% of my production rate before I finally pulled them off. Cost me a full day of pumping. Now I swap at the bar every time. Who else has a rule they fought against before it saved their ass?
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morgan31618d ago
Respect that, man. Learned the same lesson the hard way on a sandstone job last spring. Pushed my bits past the wear line and ended up burning through three sets trying to get back to pace.
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ryang6518d ago
Yeah that's a rough way to learn it... sandstone just eats tooling for breakfast if you're not careful.
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