Motor speed controller.

[Rampage]

I have a milling machine that has too high a motor speed.
If I use a speed controller does that reduce the power output from it as well as the speed?

It is a 0.5hp 3 phase motor.

Also, where's the best Alsace to get one?

 

[Outspoken]

Rampage..

Try this LINK

Excellent little inverter drive that will give you decent control over motor speed without impacting the torque too much.