Mines a 400W motor, some of them are only 150 or 200W.

I can cut free-cutting mild steel fine, as long as the tool is sharp and the cut not too big... on a 20mm dia workpiece a 0.5mm cut at 1500rpm and .1mm/rev feedrate is just about OK, with sprayed/brushed-on coolant... anything more and the machine complains and surface fiinish suffers...