I've always been under the impression that doing something like that on a load bearing motor would burn it out. Let us know how, and how long, it works!
This is the same way a variable bench grinder works. The only thing that's going to get damaged is the dimmer switch over time. I thought the same thing but I ran it by the motor shop I use.
Last edited by TrilliumLT; 02-18-2011 at 06:56 PM.
Reason: Adding stuff