Variable Speed Controller For Grinder?

[crokett]

My dad has a high-speed grinder that I am interested in using to sharpen the lathe tools. I think using a slow-speed one would be easier. Would a variable speed controller work to slow it down?

[jonmulzer]

I don't think it will. Due to the differences between universal and induction motors, a router speed controller will not do the job. I am sure Loring can elaborate more when he gets here.

[LinuxRandal]

http://www.bt3central.com/showthread...+speed+control
http://www.bt3central.com/showthread...+speed+control

I remember this from before. The first one Loring says no, the second one, he gave someone a way to possibly do it (never heard if they did it or not).

[LCHIEN]

http://www.bt3central.com/showthread...+speed+control
http://www.bt3central.com/showthread...+speed+control

I remember this from before. The first one Loring says no, the second one, he gave someone a way to possibly do it (never heard if they did it or not).

The second one I said no, too. I did say a variable frequency drive would work, but they're expensive.

[crokett]

Ok thanks guys.

[Uncle Cracker]

If you run very fast in the same direction as the grinder is turning, you will not burn your tools...

[drumpriest]

High speed steel tools should be able to take it so long as you grind, pause, grind, pause, etc... I believe that's why it's called high speed steel....anyone??