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Hi Gang: A key on the 28mm column is still very close to the center of the shaft. A 1?m error would be a 10?m error at the spindle. Also the fit of the triangular key is critical. What if you added

There seems to be some resistance to using stepper motors, which surprises me. They are standardised, cheap, and easy to wire up with cheap controllers, and can give repeatable positioning. Can anyone

Hello: Yes, I think I have seen similar workarounds. The motors and gearboxes inside those things can be quite useful. I have the idea that the split nut solution is complicated mainly because in the

Hello: Indeed ... It is the closest I have seen to solving the problem with the Unimat milling columns. But if after all the trouble of getting it done you still have to tram the head after moving it,

I have an Emco FB-2 mill.? I could try to machine a triangular gib.? It is very possible that I might not succeed. I would like to remind members of my previous message: Feb 22 #62477 (

That's the way it works - tightening the adjusting screws takes up all the clearances between the column, the key and the machine head (of whatever kind), ensuring accurate alignment every time. When

For the initial aim of providing a power feed I would just use a small battery screwdriver, or something a bit more sophisticated, depending on what I have in the junk cupboard. Coupling it to the

That's pretty impressive.? It's always interesting to see somebody able to use a machine FAR beyond its intentions.? You just wouldn't want to have to be doing that every day.? But for a one-off

I needed to reduce a piece of thick wall steel DOM tube by 0.5 mm to about 38 mm. It's 153 mm long. In order to fit it on the lathe I retracted head spindle past the stop screw. Then I made a hollowed

Here’s a photo of the fellows X axis. I don’t think it’s that big a project. Just so many other things on the go. Sent: November 27, 2024 10:20 AM To: [email protected]; mkarliner@...

I went as far as adding a slotted disk to the spindle for my ELS. http://www.autoartisans.com/ELS/ But with both a homebuilt Gingery Lathe and a Southbend outfitted with my ELS I’ve never really

Michael,? I would be very interested to see what you could come up with I am just at the point trying to decide which way to go with a power feed for my U3. Regards Phill

Do you think this type of setup could be made accurate enough to single=point thread? [email protected]> wrote:

I've been thinking about a stepper motor based power feed for the Unimat for a while. I'm also thinking about a second stage of the project to make a full electronic gearbox by putting a rotary

Yes, I’ve seen the youtube video of that guy cutting the keyway / slot also. Heavy duty machining compared with the Unimat. (It’s going to be one of those instances where someone says ‘I just

Hello: Recalled having once come across a post making reference to a *.pdf posted at Model-Engineer and found it again. Can be downloaded here (

Hello: I have always been in awe of that design. It is the lathe I would have wanted to purchase. See here ( https://www.lathes.co.uk/metalmaster/ ) for an article with a full description and designer

Mike, Looks very similar to the discontinued Sherline power feed (P/N 3001) except the Sherline is not reversible. Instructions are still available on the Sherline website and give useful information.

Yep, I’ve looked at the MetalMaster too, the triangular gib is a neat idea. I’d be interested to see what you’ve done (and how you’ve done it) also…

Hello Dick, a hashtag provides a way to categorise messages or posts (aka ‘topics’). ?I don’t do ‘social media’ but I believe it originated there. It’s called a hashtag because it starts