New Radius Turner

[GarageGuy]

Here is what I worked from:

http://www.ebay.com/itm/Repton-Lath...170?pt=LH_DefaultDomain_3&hash=item4618d8a212

GG

 

[brightonmike]

Thanks!

 

[roadie33]

Thanks GG.
By the way, what type of Bearing did you use?

 

[GarageGuy]

First I tried two ball shoulder bearings, but there was too much runout. Maybe it was a preload issue... I don't know. By the time I got the shaft tight enough to be rigid, the bearings were "cogging". I switched to a bronze bushing, and it is much more secure and stable.

GG

 

[roadie33]

I have some 1" Bronze rod. I'll have to give that a try.
Thanks.

 

[GarageGuy]

That's exactly what I used. 1" 660 bronze rod. I left a full 1" shoulder on the top to give as much support as possible to the swivel. There is a 1/4" bolt running through it for the pivot.

GG

 

[brav65]

Nice simple tool, I have a ball turner on my list of to do projects. Why does that pesky job have to interrupt my weekends?

 

[kvt]

Question, do you think a good Needle bearing would be good in it, I don't have any bronze right now but I do have some nice needle bearings.

 

[GarageGuy]

Depending on the size and whether you can get them tight enough, they could work. It's hard to say. I thought my shoulder bearings would work, but they didn't.

GG

 

[kevin]

That's an interesting design; now I wondering how I can scale it down to work with my 7x12.

Foe some reason radius turning has always fascinated me, and I have collected many links on the topic - click on the link below and scroll down to "Ball turning tools" if interested:

https://sites.google.com/site/lagadoacademy/useful-links#lathetools