Thread: Selling the Stubby

The adapter has been tightening itself all the time you have been using the chuck. Every bump on an interrupted cut, every catch, (might not happen to you) tightens.

A good soaking in your favorite mouse milk (penetrating oil), screw an ice cube (dry ice is better) into the adapter, mount the adapter in a vice, clamp a strong stick or piece of steel wrapped in cereal box cardboard In the jaws.

Heat the body of the chuck with a heat gun or with a propane torch outside where the adapter is screwed in.

Whack the stick with another stick about the size and weight of a London Bobbie's billy club.

You want a fast sharp shock to break it loose. Fast and hard, like a karate chop.
Two or three whacks and check if anything is being damaged.

Another alternative is to take it where you bought the chuck & adapters and tell them to change it.

If they break the jaws off the chuck they may feel obliged to give you a good deal on replacement.

Good luck with the process. The lathe on those legs looks wonderfully stable.

Ern if you're still having trouble, put all the chucks in the box on the back of the 2 wheeler and go for a ride up to the mountains and I'll remove them for you, never had one that I couldn't remove yet.

Thanks Paul for the advice and DJ for the offer.

The 18" shifter did the job

Next problem - the replacement Nova insert hits the bottom before the hex nut face connects with the chuck. The nut section is thinner than the old insert. Seem to recall from posts about screwing chucks to the spindle is that the faces must connect for the chuck to run true.

They're chamfered, presumably to ensure they centre.

What to do? Grind some off the other end so the insert seats properly?

Ern ,
is the insert a genuine one ? Where were some copies going around a while ago .

https://www.woodworkforums.com/f8/teknatool-international-re-nova-chuck-adaptors-69713

Yep MJ.

Same problem with the SN2 as with the Titan I was talking about above.

There's around 1/8" gap.

Edit: I'll see if Jim stocks the Vermec inserts for the Novas.

I've been looking on the net to see if there is anything about this , but so far no luck . wrong keywords maybe .

My workshop is on the other side of the city , so I can't have a look at my Titan to check the clearances till Monday .

Ern. All my inserts bottom out (Genuine Nova) and all run true.

The problem with the non genuine was that the thread was not in line with the end but the top hence you had to take a little off the end to seat at the top. Shee that sounds Irish.

Ern , I found this thread ,

https://www.woodworkforums.com/f8/nova-chuck-65234

Calm had this solution
"
I have 2 SN2 chucks both from Jim and one has a round insert the second one a hexagon insert. They both were too long and the chuck wobbled. When machined to the correct length the chuck runs true on both of them. The hexagon one i shortened it myself by fitting the insert to the lathe and turning it at full speed (2000 rpm) and used the 4" angle grinder to start with and finished with a file. I did that until the chuck bottomed out on the shoulder of the insert and they both now run true.
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regards

David "

Originally Posted by rsser

Thanks Paul for the advice and DJ for the offer.

The 18" shifter did the job

Next problem - the replacement Nova insert hits the bottom before the hex nut face connects with the chuck. The nut section is thinner than the old insert. Seem to recall from posts about screwing chucks to the spindle is that the faces must connect for the chuck to run true.

They're chamfered, presumably to ensure they centre.

What to do? Grind some off the other end so the insert seats properly?

My new Titan has the same problem - will take to 's at the weekend for show & tell if anyone doesnt understand the problem.

Here is the thread Ern referred to earlier. And another post 18 onwards

Ern the last one i screwed just the insert onto the lathe and with it running fast held the angle grinder then a file to the end and removed enough material so the chuck seated against the shoulder not the end of the insert.

Originally Posted by Calm

.....................
Ern the last one i screwed just the insert onto the lathe and with it running fast held the ange grinder then a file to the end and removed enough material so the chuck seated against the shoulder not the end of the insert.

Dave's got himself a cylindrical grinder

Both my SN2 have the gap and seem to run true - seat inside the chuck and not at the end, dunno - I remember reading all those threads and wondering what the problem was - Thought teknatool must have designed them that way

Thanks guys. Much appreciated.

K, I'll mount one and see how she goes. If that fails I'll do some metal butchery.

Ern,

It's time you told us why you went the way you did - I know you wanted a swivel head, but what else attracted you to your purchase? (I don't even know whether Vicmarc make a similar lathe. If not, why not?)

I'm definitely not questioning what you bought, only asking what the motivating factors were in the purchase.

Already I am tiring of changing chucks etc and might be thinking of another lathe. (Oops, don't tell the wife). Back to back lathes? Dust control is certainly an issue.

Jeff

Jeff, think that's covered earlier in the thread. At least why I went for the swivel head. Why the DVR XP might be another thread.

OK, so I eyeballed the spin on the Titan. Didn't bother with a dial guage cos I don't think that runout that could only be measured by one would matter with wood butchery.

At the chuck body it was small but noticeable. At the Supergrip jaw ends, on the sides, it was a good more but that's probably another story.

Then I ground a bit off the insert end so the nut bedded nicely onto the chuck body. Outcome was no better, perhaps worse at the chuck body and distinctly worse at the jaws sides at their end. The jaw faces were true before but not now. Again the measurements are small so mebbe they won't matter.

I'm inclined to get a Vermec insert to see how it goes, leaving the SN2 insert untouched.

Edit: it is of course possible that the Titan run-out existed on the old insert as well.