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+--- Thread: Rebore on a mini-lathe!!! (/showthread.php?tid=2084)
RE: Rebore on a mini-lathe!!! - bob46320 - 11-12-2018
It looks like the lower tapered boss located on the bottom of the block, and the top "Bridge" bolted down to a couple of head studs. Depending upon which bore was being cut, there would be a couple of holes in the bridge to match the studs in the block. I am assuming that the cutting tool is not in the tool at the moment.
As the handle was turned, the planet gears slowly wound the cutting tool up the bore in the ratio of (small gear divided by big gear) x Thread pitch + many many turns of the handle.
RE: Rebore on a mini-lathe!!! - Ruairidh Dunford - 11-12-2018
As my father noted, “exhausting”!
RE: Rebore on a mini-lathe!!! - Hedd_Jones - 15-12-2018
not quite a mini lathe.....
https://youtu.be/uupiF5999A8
![[Image: 008_1710.jpg]](http://www.steamscenes.org.uk/tti/14/008_1710.jpg)
RE: Rebore on a mini-lathe!!! - Timothy P - 15-12-2018
Brilliant Hedd.
RE: Rebore on a mini-lathe!!! - Hedd_Jones - 16-12-2018
This is a little more on topic
https://www.facebook.com/kamilatif.khan/videos/972162886311775/
RE: Rebore on a mini-lathe!!! - Duncan Grimmond - 23-12-2018
I knew I had this somewhere...the inside cover of "Marking-out for Machinists" by Captain Richard Twelvetrees from Percival Marshall & Co
and here on eBay is an example of the very one I had
https://www.ebay.co.uk/itm/Small-Early-20th-Century-Lathe-by-Drummond-Bros/232997006547?hash=item363fb42cd3:g:uucAAOSwuJRb4yzH:rk:5:pf:0
RE: Rebore on a mini-lathe!!! - Howard Wright - 23-12-2018
Hi All
Well having read and reread all the posts "dithered" for a while, then measured what space I have in the garage and what money I had left after buying Christmas presents for a rapidly expanding family (No2 grandson just born).
The space ruled out Boxfords and similar and the money the Myford ML7s. I've made the plunge with an older Myford an ML2. OK its old but not too worn, has a full set of change gears and after some fiddling I've got everything working. Still lots to do before I'm cutting threads and turning tapers!
Once again thanks for all the help and NO I don't think I'll do a rebore on it!
Howard
Happy Christmas!
RE: Rebore on a mini-lathe!!! - Duncan Grimmond - 23-12-2018
That looks a good one and should do most of what you're likely to need, crack on!
RE: Rebore on a mini-lathe!!! - Phil Kingdom - 23-12-2018
By the look of it I would say it is a ML4, same as ML2 only a longer bed. They are great little lathes, my first lathe was an ML4 and I did a lot of work with it before upgrading to a Myford Super Seven. One thing to watch out for with the ML lathes is wear in the headstock bearings, it is tempting to just tighten the nuts to take out any excessive wear but the castings tend to crack where the oilers fit, no prizes for guessing how I found this out ! I did manage to find another ML4 with the proper Myford ML stand in similar condition to replace it,and took out the play by fitting shims around the bearings. It would seem each component on ML lathes is numbered and machined to match the individual lath bed and are not as interchangeable as you might think.
You may find this site handy for infomation on Myford ML lathes. http://www.lathes.co.uk/myford-ml2-ml4/