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vicmarc vm100 thread?

E

erimille

Joined
Dec 31, 2004
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Location
columbus, oh
Anyone know what the thread size is on the Vicmarc vm100 chuck? I'm trying to determine the thread size the inserts screw into and I can't seem to find this in any of the Vicmarc literature. Help?

Thanks in advance,

--eric
 
Jim Carroll said:
thread size 40mm
Click to expand...

Excellent! Thanks Jim!

I got a very good deal on this chuck (along with some tools) at a woodworking show this weekend. While my lathe / spindle thread issue has been mostly resolved, I've now have the unfortunate realization that the threads on the spindle are generally not long enough to take the Vicmarc adapters. The Vicmarc adapters are not threaded all the way to the end. As such, it threads right up to the headstock which hinders rotation 🙁

I'm looking into making an adapter for this chuck that is threaded to the end. As such I appreciate the info.

--eric
 
You are best to take the spindle and chuck to an engineering firm and have them make the adaptor for you.
The adaptor has to be made to fit both but the critical part is alignment.
Once they make the insert to fit the chuck they need to drill and tap the insert to suit the shaft.
To do this they need to place the chuck and new insert in the lathe get it running true with dial indicators then drill and tap the insert while it is all togethter. This will ensure correct alinngment. If they just drill and tap the insert there is no gaurentee eveything will run true.
 
Jim Carroll said:
You are best to take the spindle and chuck to an engineering firm and have them make the adaptor for you.
The adaptor has to be made to fit both but the critical part is alignment.
Once they make the insert to fit the chuck they need to drill and tap the insert to suit the shaft.
To do this they need to place the chuck and new insert in the lathe get it running true with dial indicators then drill and tap the insert while it is all togethter. This will ensure correct alinngment. If they just drill and tap the insert there is no gaurentee eveything will run true.
Click to expand...

Thanks Jim for the suggestion. In short, I did just that. I'll let you know how this turns out.

If this doesn't work, I think I'll have to let this go and look into actually buying a lathe that works! 🙂

--eric
 
erimille said:
Thanks Jim for the suggestion. In short, I did just that. I'll let you know how this turns out.

If this doesn't work, I think I'll have to let this go and look into actually buying a lathe that works! 🙂

--eric
Click to expand...

Just received the adapter today. The adapter is extremely well made, but about 2x what Vicmarc is asking for. That being said, the custom one is a *far* better fit for my spindle than than the Vicmarc.

Everything snug and tight, looks great ... but I'm afraid in the end the spindle threads (even after having these trued) are just too warped in the end to work. The wobble at the end of the chuck is just too much ... ah well. 🙁

So... If anyone is interested in a Craftsman's first 12x36 heavy duty wood lathe which is now about 85 years old, please let me know. My focus now is to find a "new" lathe.

--eric
 
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