Yes, this is true. The most accurate *revolving centres are the three (or four) bearing models used on engine ( metalwork) lathes.What you get with the high end live centers is two bearings. Not the case with many cheap ones.
I'd like a version of this smaller reverse cone(?) for my Oneway live center. It comes with a similar fitting, but it is much larger and without the pinpoint center interior. I guess I could make a wood insert for the Oneway of a similar shape.
View attachment 70932
Having used them all, for a period of time it looks, which would suggest a new turner get? They all seem to have a lot of flexibility, just that the Nova isn't threaded directly. Is this the case?I have 2 Novas, 2 Oneways, 2Powermatics and 1 Robust. They run in order of coolness (in other words which one in heavy use runs the coolest) Nova #1, Robust #2, and Powermatic #3, Oneway #3. A bunch of others that were only used for hands on when 10 or more lathes were being used. Now none of this means that any of the above are bad as I have had them all for years and they all still work as they were designed to do. I didn't mention bearings because for most of those I don't know how many bearings they have. But I do know the Nova has 3 bearings.
Thanks, Bill, that would be helpful.I made a smaller cone for my OneWay centre out of Aluminium. You could easily use wood though? I’ll try and find a picture.
One major benefit about the longer live centers that accommodate more bearings - they allow the tailstock to be further away from the work, without extending the TS quill further. This gives more room to get the banjo/tool rest into that space. I have not found the extra bearings to be of benefit in terms of load - I have a 60 deg cone style with single bearing that I’ve had for a dozen years and did a lot of unbalanced turning with it, and the bearing is fine. That’s on a 16” swing lathe. The much heavier pieces one can get on a larger lather is a different story.Having used them all, for a period of time it looks, which would suggest a new turner get? They all seem to have a lot of flexibility, just that the Nova isn't threaded directly. Is this the case?
Long term I can see the utility of having both the Nova and one of the others, but could I get good performance with just the Nova to start? Tooling dollars are tight starting out, but getting quality tooling should help learning.
Gregory
I didn't think so... But nice job on yours.Sorry Steve, I’m not the world’s most competent machinist and once you add shipping etc!