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Why is everyone ignoring tramming their vise?

I've been in and out of 3 different shops this month setting up new machines and I keep seeing vises that are WAY off. One guy at a job shop near Detroit had his off by almost 0.008 over 6 inches. He kept blaming his tools for bad cuts but it was right there on the indicator. How do you check your vise alignment before you start running parts?

2 comments

2 Comments

mason.anna5d ago

Ask the guy in Detroit if he even owns a gage block or just eyeballs it. I've seen guys swear their vise is dead nuts square but they're just giving it a quick wiggle with their hand and calling it good. Do you actually sweep the fixed jaw with an indicator mounted to the spindle, or are you one of those people who just trusts the keyways in the table slots? Because those slots can be off too, it's not always the vise. I'm curious how often you see that fixable kind of slop versus people who just didn't bother to check at all.

viola_cooper624d ago

...wait, so you're telling me there are guys out there who just wiggle the vise by hand and call it square? That's wild to me, I've seen guys spend an hour squaring up a Kurt vise only to find out the table slots themselves are a few tenths off. I guess that's why you always sweep the jaw with an indicator, but it still blows my mind people trust those keyways that much.