Ha, I posted a quick reply about 30 mins ago but it seems it didn't post for some reason.

Hi Chaz, many thanks for the reply and info much appreciated! Well spotted and very close, I was brought up in Zimbabwe. Have you spent some time in that part of the world?

The triac was actually given to me so no cash has changed hands yet, although it did come with some Coventry easy change tool holders which the seller (my boss) may want some cash for. Looking online replacements are about £100 each!

It definitely has steppers, although I havnt had a chance to look inside the control enclosure yet.

What set of components would you use to convert this mill Chaz? Would you keep the existing steppers or start from scratch.

Apart from that are the Triacs a capable machine in your opinion?

Cheers for now