Turning Dilemna

mgdesigns · Post by **mgdesigns** » Wed Aug 29, 2012 10:03 pm

Well, I've finally started to try my repaired Rotator Cuff on the Right Shoulder. I went to turn a bowl at my mentors house, and it was fine (shoulder that is). [ATTACH]18322[/ATTACH]
[ATTACH]18323[/ATTACH]
[ATTACH]18324[/ATTACH]
This is Bradford Pear harvested about 2-1/2 months ago while arborists cut down 4 trees near the house, and measures 12.75 diameter x 4.5 " tall. It has since gone oval 12.75 x 12, but stayed flat top and bottom.

Then I went to the TAW club Turn & Learn, and made a few blanks for tool handles and a couple of bottle blanks. When I tried to finish them on the SS I find that when a piece is supported on a live center all is pretty good. As soon as I remove the live center to do work with 4-jaw chuck (Nova G3) I get a lot of hop. I feel the double bearing spindle is OK, and the chuck may be the culprit. The single setscrew on the 5/8" flat tends to vibrate loose. Any suggestions from turners would be appreciated.

BTW: If and when I ever get the space and money I am getting a real lathe, 'cause the SS is not very stable, and I've got too much invested to not turn properly at this point. Thanks.

fjimp · Post by **fjimp** » Wed Aug 29, 2012 10:14 pm

Wow great news treat that shoulder gently. Great job the bowl is really nifty. Your vibration concerns me. What version or age is your shopsmith? Do you ever experience wobble from the quill? Are you extending the quill? Jim

beeg · Post by **beeg** » Wed Aug 29, 2012 11:27 pm

mgdesigns wrote:As soon as I remove the live center to do work with 4-jaw chuck (Nova G3) I get a lot of hop.

Do you know that if ya take your piece out of the chuck and then remount it. You'll have to true it up again?

Great looking bowl ya turned.

reible · Post by **reible** » Thu Aug 30, 2012 12:13 am

Hi,

Within the last couple of weeks there have been a lot of posts about some G3's with the wrong adapter. You need one that is for the shopsmith with tapered flat on the 5/8" spindle. If you have one that is for a plain 5/8" shaft it is not the right one.

It's a little late tonight for me to go searching so if someone doesn't point you to those by the time I get back here in the morning I will find them. Or you could of course do the search yourself.

I believe there was also some post about getting some bad jaws, an out of round issue. This is also been in the "news" here on the forum in the not so distance past.

Ed

Culprit · Post by **Culprit** » Thu Aug 30, 2012 8:42 am

Here is the link to the recent thread about my Nova G3 chucks and their out of tolerance runout:

https://forum.shopsmith.com/viewtopic.php?t=10809

holsgo · Post by **holsgo** » Thu Aug 30, 2012 5:17 pm

Well, I've used the SS as a lathe for a while now and consider it as real as it gets. However, if you are off center, bad tools or don't have he SS weighed down you may have issues. But considering that we've seen a guy basically turn a tree on a Shopsmith...literally, I don't see any issues I could ever cause.

pennview · Post by **pennview** » Thu Aug 30, 2012 5:39 pm

If you think the chuck is the problem, you could test that by mounting the chuck on the Shopsmith without any wood, turn it on, and see if you have the same "hop" problem. I don't know what speed you're using, but try the slowest setting on the Shopsmith until the stock is round/balanced. Also, using the tailstock during the initial rounding and balancing of the stock is not unusual.

mgdesigns · Post by **mgdesigns** » Thu Aug 30, 2012 10:29 pm

reible wrote:Hi,

Within the last couple of weeks there have been a lot of posts about some G3's with the wrong adapter. You need one that is for the shopsmith with tapered flat on the 5/8" spindle. If you have one that is for a plain 5/8" shaft it is not the right one.

It's a little late tonight for me to go searching so if someone doesn't point you to those by the time I get back here in the morning I will find them. Or you could of course do the search yourself.

I believe there was also some post about getting some bad jaws, an out of round issue. This is also been in the "news" here on the forum in the not so distance past.

Ed

I bought mine 2 Christamses ago on Amazon for $99 + shipping, with no extra bowl jaw kits like they later offered. The adapter is a straight 5/8" diameter bore though, and has a single setscrew. As for out of round, I don't know about the jaws being the problem, just the lack of grip to the flat on the shaft. I do have a newer headstock (Dec., 1989) and it has double bearing quill. It seems fine when I just have a live or even dead center on the opposite end to provide tension and support.

I would like to get right adapter if that's possible, and hopefully one that uses the right (same) hex key as the rest of the SS (5/32")?). Thanks.

mgdesigns · Post by **mgdesigns** » Thu Aug 30, 2012 10:52 pm

Culprit wrote:Here is the link to the recent thread about my Nova G3 chucks and their out of tolerance runout:

https://forum.shopsmith.com/viewtopic.php?t=10809

Very interesting read. I have the wrong adapter for sure, and the runout question is still to be checked. I will have to call TeknaTool tomorrow, and get a return order going. Maybe all of the hopping has been due to the lack of retention between the the adapter and the SS shaft. We use Nova chucks at the TAW club shop on most of the Delta, Jet, and other lathes. The OneWays have Oneway chucks. I really want this to work better, because I've spent many hours trying to get to be a better turner, and really love making things. Thanks for the help, and the information. Forewarned is forearmed.

I am glad their an American Company. I bought mine like I said in about December 2010, and I think it shipped from NW US or Vancouver CA. And the adapter was spec'd as SS - 5/8" bore. I purchased on 12/26/2010 from ebay dealer rg_woodworker_specialities.