Myford, ML7, ML10 , ML4 parts, tools, accessories

[les peacockParticipant @lespeacock91391]

Are there any parts , tools or accessories used with the myford ml7 and ml10 that can be used with a ml4

[les peacockParticipant @lespeacock91391]

[NigeParticipant @nige81730]

The Dial Thread Indicator from a ML7 will fit the ML4

[Brian WoodParticipant @brianwood45127]

Hello Les,

If you fit a short collar to the plain register section of the nose thread on your ML4 and then machine it in-situ to a snug fit for 1.250 inches, you can then fit ML7 spindle fitting hardware instead of the more difficult to find 1.125 inch register size for ML4 chucks.

Already fitted up with suitable chucks? Then use one to hold the backplate of another and remachine the register to ML7 size, make the collar and use that chuck to do the same on others.

And a tip for setting the comic bits and pieces to get the tailstock properly aligned with the headstock centre-line. Fit your best chuck to the lathe, one that you know grips true, wind out the quill on the tailstock and grip the O/D in the chuck while you set up the tailstock shoe.

Regards Brian

[GeorgineerParticipant @georgineer]

Brian's idea of a collar to enlarge the register to the ML7's 1 1/4", in place of the ML4's 1 1/8", is a good one if you have the later ML4 with the 1 1/8" x 12 tpi thread.

However the earlier ML4s had 7/8" diameter threads with either 9 or 12 tpi and a 7/8" register. Whether a 7/8" internally threaded sleeve would have enough thickness to cut the 1 1/8" x 12 thread on the outside I don't know.

Changewheels from the ML7 can be used on the ML4 . Many of them already have a blind hole for the 3/32" drive pin, as well as the keyway. but it's a simple job to drill your own if they don't.

The Dickson quick change tool post fits, though it needs a 3/8" bore 'top hat' washer to go over the tool post stud in place of the 7/16" bore washer provided for the ML7. It's easy to make one on your own lathe.

The ML7 fixed steady fits, with a bit of filing to the underneath fitting to allow it to turn between the sides of the lathe bed. I've never got as far as fitting my ML7 travelling steady to the ML4, but it should be no problem with suitable packing and a tapped hole in the saddle.

The ML7 vertical slide will fit if you want to try milling, though the ML4 lacks stiffness so it might be challenging to get good results.

George

Edited By Georgineer on 20/06/2018 23:15:27

[Brian WoodParticipant @brianwood45127]

George,

The earlier lathes with the smaller spindles were ML1 and 2 models and the modification will not work well as new threads need to be machined as well and there is very little room to contain them.

I have in the past made a whole new ML7 nose for those spindles, but it does mean sending the spindles up to me for the modification to get things completely concentric and it represents a major modification that is irreversible. Worthwhile in my view but not cheap for the owner.

Regards Brian

[HopperParticipant @hopper]

I think you will find that ML7 change gears will fit the earlier Myford ML1-4 but they may need a hole drilling and reaming for the drive pin in each. I've done it the other way round: cut keyways in early Myford gears to fit our ML7. But I never did verify exactly which early model the gears came from, so you would need to check the DP is 20 on your ML4.

[Brian WoodParticipant @brianwood45127]

Hopper,

The gears are interchangeable; 20 DP and 14.5 degree pressure angle

Brian

[HopperParticipant @hopper]

There you go then, confirmed that ML7 gears will fit ML1-4, with the drive pin added. Thanks Brian.

[les peacockParticipant @lespeacock91391]

The lathe has a 7/8in thread on the spindle, im a novice when it comes to machining so anything to technical will be a no go until I get a little more experience

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