Hi,
Thank you for all this info!

We are cutting 6.5mm and 9mm Birch plywood, ideally cutting right through within 2/3 passes. (ie 3mm per pass maybe?)
We have a large side channel blower (vac pump) connected to a pipe distro system under the table, which then feeds into 5 vacuum zones. We have ultralight 25mm MDF (plained on both sides) spoil board, so vacuum old down is covered!

We are meant to have this spindle .. http://www.marchantdice.com/worldofcnc/pdf/ELTE.pdf .. The 1.1kw version.
The inverter runs it at 3 phase I believe.
We were assured it was more than suitable for the requirements we have, and that they have clients cutting though 21mm ply. We have run a few tests on 6.5mm ply and it does work quite nicely, just looking to optimise it now..

However we think they've installed a different spindle to what we are meant to have! We think we have this .. http://www.worldofcnc.com/milling-sp...or-p-2671.html

Once we've straightened out the spindle clarification we should have a machine that can run upto 24000 rpm and a max feedrate of around 5800 mm/min.

I hope that clarifies our situation!

Cheers James