Myford 7, 3 phase motor other CNC questions.

[magicniner]

I fitted a standard 3 phase, foot mount, TEE branded motor to my Super 7 about 10 years ago, I had to file/cut the mount holes in the plate and use thick washers on the nuts but it's held up for those 10 years (and so has the second hand Siemens drive that runs it), it will take 4mm OD reductions on 2" stainless with (using indexed carbide tooling) little curly blue chips flying everywhere, all for £165 ;-)
I'm using a Siemens Inverter Drive but on other machines I have ABB and Mitsibushi, any of the big industrial names should give good performance, documentation and life.
All my drives either have a potentiometer built in or have front panel buttons to give speed, jog and direction control, these can alternatively be set to external controls.
If you buy a decent drive and read the documentation the programming isn't Rocket Science, if you buy a drive with a Chinglish manual you might struggle,
Regards,
Nick