machining aluminium with 1.5kW spindle

[JAZZCNC]

Can't help with torque guides etc but I can tell you that 2.2Kw cuts ali fine with speeds down to 5000rpm thou to be honest I mostly cut between 8-12K depending on cutter size.

Now if your getting Sticking and melting chips then I suspect your cutting to shallow so getting very thin chips which heat up quickly and melt. Try cutting deeper and you may well be pleasantly surprised what depth you can cut at. Set the VFD to amps and watch the load this will give you an idea of how the spindles coping with the depth.!