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Nova midi chuck problem

M

Mike Cunningham

Joined
Oct 1, 2005
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www.mikecunninghamwoodturner.com
I have a question regarding the Nova Precision midi chuck and hope someone has an answer. I own a variety of chucks and seldom use this Nova so I have little familiarity with it. The other day I mounted it on the lathe and found that I was unable to open the jaws using the tommy bars, nor was I able to close them.

I looked at the Teknatool website and following the directions disassembled the chuck, cleaned (didn't need it) and attempted to reassemble. The directions state that one should insert the #1 slide into the slideway which has a small half moon shaped dimple. I'm unable to discern this shape on any of the slideways. I've tried inserting the slides in numerical order starting at all four of the slideways and find that the chuck will not function regardless of the slides used.

Any ideas?

Thanks,
Mike
 
Mike I have the Precision Midi and while I have never had mine apart, I have encountered a time when I could not close the jaws on it all the way. I found that the chuck actually screwed onto the spindle to far putting the jaws in a bind. I overcame this by putting a spacer in between the spindle flange and the chuck. No more problems. Hope this helps.
 
I've had mine apart several times and don't recall every having to consider a "half moon" symbol in the reassembly process. I'll run down later tonight and see if I can find anything on my chuck that could explain what you're experiencing.😱
 
I had a problem with mine getting a burr on one end of the scroll threads. The symptoms were that it got "sticky" and didn't have smooth action. Once I filed off the burr and quit running the jaws into the stops I was ok. 😀

You might have a set screw doing something bad...🙁
 
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