Well, I spent a good few hours trying to dismantle this motor while being very careful not to risk damage, I could not even get the drive disc off the long shaft, seized well on. There is also a pressed-on fan at the top to shift which would likely bend/break so i carefully replaced what i had done and left it.

So my choice is now to build the cabinet and wire for the VFD / motor OR throw one of these in...

http://www.aliexpress.com/store/prod...037588952.html

I have asked the guy for a 2kw or 2.2kw 3000rpm unit but not had a reply yet, seems the bigger servos don't have the speed needed.

Fitting would be easy, but the only benefit i would really see is the easy and accurate speed control - I don't need/want rigid tapping although i think it would be useful for smaller taps maybe - what is needed to gain rigid tapping?? Is it just a setup option or do i need more CSMIO modules??