Quote Originally Posted by Clive S View Post
Doddy If you are looking at the green connector then I think that is just a 3D printed cover to cover the hole up in the top of the spindle. The original plug and socket have been discarded and the cy cable soldered directly on to the spindle wires.

My personal opinion is that I would not do this but keep the original plug and socket BUT securely fix the cable to the spindle plate so as there can be no movement in the plug and socket as this is a source of problems with vfd's letting magic smoke out.
I was looking at the picture on page 1, but now having seen your reply I've noticed the second image. Not keen - I'd be concerned that such thin-walled printed structure certainly will be porous and provide little to no mechanical relief. I'd agree with Clive's suggestion - get some saddle clips (or similar rigid mount) on the plate and tie-wrap the cable-form to these. It works on fast-jets, should be fine on a milling machine.