Carl Fisher
Member
This may sound like a stupid question, but I'm going to ask anyway.
So I took a blank, made it round between centers and then sunk it about 85% into my Beal collet chuck to drill. When I drilled and removed the blank, it was so far off center on the exit side I ended up tossing the blank.
I've also tried drilling first and then using a punch in the tail stock to keep the blank nice and true but once I tighten the Beal down and give it a spin by hand, all that does is wobble the tail stock around...so that's definitely not true.
So when dealing with drilling, then ultimately tap and die operations where you may have to remove and re-install the blank in the chuck a few times, how to you keep it running true in the collet each time when tightening back down? Or do you just have to keep adjusting by trial and error until you find the sweet spot where everything runs true again?
Is there a proven method to get everything lined back up between operations so that you can continue where you left off after removing the blank?
So I took a blank, made it round between centers and then sunk it about 85% into my Beal collet chuck to drill. When I drilled and removed the blank, it was so far off center on the exit side I ended up tossing the blank.
I've also tried drilling first and then using a punch in the tail stock to keep the blank nice and true but once I tighten the Beal down and give it a spin by hand, all that does is wobble the tail stock around...so that's definitely not true.
So when dealing with drilling, then ultimately tap and die operations where you may have to remove and re-install the blank in the chuck a few times, how to you keep it running true in the collet each time when tightening back down? Or do you just have to keep adjusting by trial and error until you find the sweet spot where everything runs true again?
Is there a proven method to get everything lined back up between operations so that you can continue where you left off after removing the blank?
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