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Myford ML7 Resurrection - A New Summer Project

I got the major motions of the lathe working (made a new gib and enough gib screws to get the carriage and half nut setup and working reasonably well), but with the spindle torn down I decided that there wasn't enough of the thread at the back of the spindle for me to trust it to tension the bearings. That leaves me with a couple options. 1) buy a new spindle and plain bearing set and put it back to the original setup 2) make a new spindle and go ahead with my plan to use tapered roller bearings 3) make a new spindle and cast a set of Babbitt bearings.

At that point of I put it on the backburner and spent most of my free time making tooling and accessories my mill and trading up to a bigger lathe and getting that working. In the meantime I was given another ML7 from my uncle's neighbor. That one is complete and more or less unmolested. He had it sitting in a wood shed (roof, but no walls) for about 10 years after he got it from another neighbor. In spite of that, it had surprisingly little rust. The worst was a small patch at the tailstock end of the bed, but a razor blade and precision flat stone make quick work of that. As to actual issues with ML7 no.2, the gibs had been over tightened and then somebody had tried to move the slides and unscrewed the handles. After a little bit of re-adjustment it was ready to use. I've got it setup as my indoor lathe now and that really took the wind out of the sails of this project.

I looked into a new spindle and bearings from Myford, and they're available, but were going to be a couple hundred dollars and I wasn't ready to double the investment into the lathe to have a redundant lathe. The other two options both sound like the would be fun to do, but they'd still take a decent investment of materials and time and I have other things that I want to make first.

If somebody is interested in taking on the project or just having it for parts I'm open to offers, but otherwise, I'll probably do something with it at some point. I've dabbled with the idea of turning it into a horizontal milling cutter grinder by pairing it with a tool post grinder, but so far it's just been sitting in my basement.

These aren't the best pictures of the new machine, but they're what I already have on my phone. I've been slowly acquiring tooling for this lathe as well. I'm up to most of a set of change gears, an ebay special dickson style quick change tool post, steady rest and follow rest, a 4" 3 jaw with only inside jaws, a 5" 3 jaw with only outside jaws, a 4" 4 jaw that I haven't made a backplate for yet, and a cast iron back plate that I haven't started the machining.

As is, I've got a nice, usable Myford setup.

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I missed this update.
Looks like my dad is getting ready to pass on his ML7 to me to do with as I please. He bought his new back in the day - I need to get the year from him but early 1960's. I need to figure out what to do with it. Its been indoors all its life and not too much use (built 2 x 3.5" gauge live steam locomotives). Not sure I really need it, maybe a pickup truck mounted lathe so I have one handy at all times? I may do the unspeakable to some and CNC it (in a way that can be returned to stock). as it can swing a bit bigger material than the Emco compact 5.

He did say the back spindle oiler interfered with the belt cover from new, so he made an offset extension to help it clear, I'll get a picture, just curious if yours clears the cover or interferes? He also said it would empty itself in an hour or 2 and spray oil all over the back wall...curious if thats an adjustment issue or a design trait. When I get it I'll post more in my shop thread.
 
I'm not sure that I totally understand which clearance you're talking about, but this how the rear oiler sits relative to the two belt covers on mine.

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I do find that the main belt cover is a little weeble-wobbly unless you manage to get it clicked in just right. If you don't get it clicked in it's free to move back and fourth at the bottom (headstock end) of the cover by maybe 3/8", which is enough to foul with the socket head cap screw that you have to loosen to free the pulley from the spindle when engaging backgear.

I have the oilers set to sonmething like 2 drops per minute (guessed, not measured). The manual that I found for the ML7 basically said to set the oilers to flow as little as possible, so I set it to the slowest that I could stand to wait while watching to be sure that it was indeed dripping. I don't have streaks of oil up the wall behind the machine yet, but I haven't really used it all that much so far, so that might well change. As to how long they last at a time, I haven't tested that to the extreme yet, although I did notice that the drip rate of oil is a decent bit faster with the machine running vs with it off, so I'd suggest adjusting the oilers with the lathe running.

If you find that you need some parts for your dad's lathe/for the potential CNC conversion let me know. I just might have a spare ML7 lying around 😉. If you're planning to come to @slow-poke's BBQ again this year we can chat about it there too.
 
I missed this update.
Looks like my dad is getting ready to pass on his ML7 to me to do with as I please. He bought his new back in the day - I need to get the year from him but early 1960's. I need to figure out what to do with it. Its been indoors all its life and not too much use (built 2 x 3.5" gauge live steam locomotives). Not sure I really need it, maybe a pickup truck mounted lathe so I have one handy at all times? I may do the unspeakable to some and CNC it (in a way that can be returned to stock). as it can swing a bit bigger material than the Emco compact 5.

He did say the back spindle oiler interfered with the belt cover from new, so he made an offset extension to help it clear, I'll get a picture, just curious if yours clears the cover or interferes? He also said it would empty itself in an hour or 2 and spray oil all over the back wall...curious if thats an adjustment issue or a design trait. When I get it I'll post more in my shop thread.
Sounds like a passing of the Chuck party is in order.
 
Best as I can tell, that cover's position is defined by this stud and the mounting boss circled in blue in the second pic. Might be worth checking if one of them is bent. Those are both mounted on the main support casting for the countershaft and that seems to bolt into the bed, so I don't see how that could be misaligned.

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For reference, the serial numbers for my two ML7s are K62427 for the complete lathe and K60874 for the basket case. That puts them into the both into the 1963-1964 range according to some document that I downloaded from some source that I don't remember (maybe it was the Myford site?). Attached for reference.

This is a picture of the circled mounting point on the other ML7, which is more accessible. To be honest I don't really see how the motor belt cover could mount onto that stud, but there it is for what it's worth.

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