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And here is a simple answer........Simple question... The J-head I just picked up has a mashed pin in the quill so it is difficult locating the collets on it. How do I replace it?
Yes on the BPT. Right hand thread it is...... pgIt's a right-hand thread on the nose piece on a real Bridgeport and left Hand thread on my Webb and other Asian imports, I presume.
It prevents the collet from turning when you tighten things up.
MUCH easier way to tighten the collet......hold the brake with one hand and the wrench with the other.
MUCH easier way to tighten the collet...
Put the top shift lever in high gear (pointing forward) and the side lever in back gear (also pointing forward).
Locks the spindle up tighter than an old maid's purse.
Tighten/loosen all you want, you're not going to move the spindle one degree.
Of course, remember to shift the handles to the desired speed range before you start the mill, 'cause it won't start with the handles as described.
Also works for tightening/loosening keyless chucks and anything else that wants the spindle to stay put.
- Leigh
You have problems with your friend's pin equipped mill because he has a banged up pin. He needs to work on that machine a bit.
H-mmm, interesting observation you have there...."I always look at it this way.........
The people at Bridgeport knew far more than I ever will about the machine."...
What they "knew" is that there are some people out there in humanity that could not figure out what to do when they try and thread in a collet, and the collet spins. Some poor rube spinning the drawbar, and sees the collet spinning and thinks there must be something wrong. He thinks it is owed to him by some God given premise that his collet should not spin. How dare he have to touch the collet while tightening it. Grabbing a collet with his left hand might mean he is gay or something. Wouldn't want that. So to avoid all this drama, Bridgeport included the key. That's how I see it, others may and probably will differ.
--Doozer
H-mmm, interesting observation you have there.
My mill has a Kurt automatic drawbar on it now, but before it did.......
I used one hand to tighten the drawbar with the wrench and the other hand to hold on to the spindle brake.
Now, you must have 3 hands so you can touch the collet at the same time? Or if you have some other trick, please share it with us........ pg
..."I always look at it this way.........
The people at Bridgeport knew far more than I ever will about the machine."...
What they "knew" is that there are some people out there in humanity that could not figure out what to do when they try and thread in a collet, and the collet spins. Some poor rube spinning the drawbar, and sees the collet spinning and thinks there must be something wrong. He thinks it is owed to him by some God given premise that his collet should not spin. How dare he have to touch the collet while tightening it. Grabbing a collet with his left hand might mean he is gay or something. Wouldn't want that. So to avoid all this drama, Bridgeport included the key. That's how I see it, others may and probably will differ.
--Doozer
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