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Posted on Building a Lathe, need some ideas.

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472 posts in 4322 days

#1 posted 05-22-2017 03:07 PM

Some thoughts in no particular order, some of which are addressing your question and some of which are not…

If you could salvage a treadmill motor, you could get the HF lathe working again but with added variable speed drive. You seem to have the skill to make the mounting brackets for mounting one. Although the lathe is limited size for bowl diameter, it would work well for spindle work.

Have you looked inside the tailstock on your HF lathe? I just took mine apart, and it’s a pretty simple design. The only thing that I’d have an issue with is the female MT2, but other than that, it’s pretty straightforward. Should be pretty easy to duplicate the design, but larger. I’d probably buy (or salvage) the part with the taper and use steel tubing to hold it.

Having said all that, I suspect that spindle turning on a lathe with a 38” swing will be disappointing. That large a diameter puts the tool rest, headstock, and tailstock very far from the base support. You’d really have to over-engineer the base to be able to hold everything without getting vibrations and chatter that will be hard to remove from the workpiece. Anything is possible, but leverage is not on your side.

If you’re determined to make this work, then you should probably rethink the design of the base a bit. The way you show it in the photo, torsional stability may be an issue in the base. If you weld the rails to a pipe, like Robust and OneWay do, then it will resist torsional stress better. I don’t mean to say that you’ll have trouble holding the piece, but rather that vibrations may show up in your workpiece as chatter.

I look forward to watching your progress. I’d really like to see how this works out for you.

-- Barry,

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