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Restoring 70s Woodfast lathe
Dear Brains Trust,
Inspired by the thread below I've been pulling apart my slightly older, but very similar, Woodfast lathe. This post got long; a bit of rambly story, then I've got a couple questions at the end. I'm hoping Lance from the thread below might chip in ;)
https://www.woodworkforums.com/f8/re...t-lathe-234911
Some backstory: around 8-10 years ago I bought the lathe on Gumtree, and had a lot of fun learning to turn. In 2014 I moved house, life got in the way, and I didn't do much turning. Moved again 2016, and since then it's had to live outside just because of space :( It was mostly covered, except when I didn't notice the tarp had split and it was a de facto rainwater tank, so it became fairly worse for wear. I moved again in 2018, same space issue, and then AGAIN in 2020 (finally bought a place, so hopefully no moving for a decade or three). In June I was trying to decide if I get rid of the 300kg lump of rust, and buy a new lathe when funds permit, or move house with it a fourth time, when I came across Lance's thread which tipped me back to keeping it. I do love old heavy machinery like this. Having moved house, and with two small kids, it's been a slow hour or two at a time every week or two to clean this thing up.
So a few photos to start. I think the mark in the third photo means Variable Speed Lathe (VSL), 1971?
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It was originally a 3 phase, but at some point someone converted to a single phase motor. Whoever did that also put what I can only assume are the wrong belts - toothed belts typically don't go on smooth gears, and the black stuff all over the inside of the cabinet is rubber which has flown off those belts. Worked fine, but was always noisy and rattle-y; hopefully that'll be fixed by the time I'm done.
Motor, and variable speed mechanism:
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The variable speed drive made me scratch my head for a while - why does moving that spindle up and down change the speed? Are the belts intentionally slipping? Is it some kind of belt-tension-magic? What I've concluded (and happy to be told I've misunderstood, preferably before I put it back together!), is that changing the relative tensions of the two belts shifts the middle double-sided pulley left or right, causing the belts to ride higher or lower in the respective spaces between the pulleys. Fantastic clever simple engineering! This means they should (I think?) have a decent coating of grease on the shaft so that middle pulley can move more freely? Note they're keyed onto the shaft, they all rotate together with the shaft.
I've now done the elbow grease bit on most of this lathe, and am up to the two drive spindles; one in the headstock, one in the variable speed mechanism (transmission from motor to headstock).
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This leads me to my questions:
1. How do I get those bearings out??
Variable speed spindle: I can't get to the back of them other than through the other bearing. Stick a (relatively thin) bit of timber through and smack it with a mallet? I've been a little loathe to try as I can't imagine I'll be able to do it straight, and don't want to make it crooked and even more jammed in there. I was thinking complicated thoughts about a bit of steel with a thread in the middle that I could drop in, then thread a rod onto, then smack it out...?
Headstock: I'm guessing remove that little key, smack the spindle out, and same as variable speed one?
2. Suggestions for where to buy bearings? I'll pull them apart and see if they just need repacking, but I suspect replacing is the way to go. Never had to buy bearings like this before, and would rather spend $$ on decent ones than ever have to pull this thing apart again.
3. Suggestions for where to even start with working out the right belts to buy? I'm assuming it's meant to be a V-belt of some sort, and I could measure the pitch of those pulleys...? There's also a top pulley, and a bottom one on the motor, that I could measure more directly.
(I'm in Canberra, by the way, but assuming I'll buy these things online).
Thanks in advance!