Thor, or should that be Zeus?

[Chaz]

In my opinion both will be best. Then you dont need the spindle to be 3kw. It could be smaller. And cheaper. As the 3kw is almost 500 euros with the inverter.

Thing is (and Dean has commented since), going lightweight on this machine is a waste. I already have a 4KW VFD that I bought some months ago (did not get the spindle at the time) as I wanted something to run a 3 phase vacuum pump and then later potentially use it on my machine.

Another option is to look at the spindles like they use on Datron machines - up to 60K RPM, 5 KW typically. Not cheap, probably £3-5K Id guess.

15KW, I cant power that (and I know Thor wont be stressed) - even the weight of that will be interesting to move around.

Anyways, Jazz, I did send you an email a few days ago about AC Servo setup in case you had time to look at it please?

Thanks