Quote Originally Posted by Tenson View Post
Have you considered a Super-PID for the spindle? It seems like it would help a lot with metal cutting that needs high torque and lower speeds than wood. I haven't used one, but it looks very interesting.
Super PID is for closed loop control of standard routers only. For someone cutting metal a standard router is a bad idea due to the rigidity - it wont last long. If you've already got a standard router, or a kress, then it's worth considering, but it's clearly better if you can afford to just get a proper 2.2kW spindle to start with.
Mad Professor on here uses a Super-PID, but he's going to change to a 2.2kW spindle fairly soon.