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I bought several holders from Engineering Supplies, their shipping was fast and their service was excellent, it's a shame Tony is out of stock of the ER32, I was going to buy another from him for me...

Jurassic Tools have an ER32 Coventry Easy Change in stock at a good price -

http://www.jurassictools.com/store/search?search=store&phrase=easy+change

- Nick

The Coventry Easy Change system was fitted to lots of machines, however it doesn't use a pullstud, which is why my money is on some form of Boxford specific custom holder.
Boxford aren't exactly...

My advise is don't buy any of that lot from Automation or Kelling cnc as it used to be known.? You'll be paying far more than need to for only average components. (the fact your looking here makes me...

Did I read that you are using nema 34 motors if so you might want to use much higher voltage drives like mains voltage. As Neale has point out 24V will not do the job for the steppers.

Only using 24V for those drivers/motors looks like throwing away a lot of performance. Taking it up to 68V or so wouldn't cost much more, if you use a linear power supply instead of switch-mode....

Boyan That's little out of order to me and not very good advise for someone who's stated got no experience and who's wanting to convert a mill with full ATC.

The work involved just for the ATC...

The offline controller is simpler than the combo Windows-Mach3/4-motion control plugin-motion control. What programming? The first part of the manual covers manual programming of simple milling jobs...

Or you could be our guinea pig and try one of the standalone 3- 4 axis chinese controllers. I will point you from where and which one exactly, if interested. Around 500-600 euro. means 300 euro...

Budget? That will guide what you do with the machine.

If you can afford it, get the CS Labs IP-S unit and go from there. Its not cheap but it is better than your average parallel port option and...