Thread: low rpm buffer on the chp

Trying to find out a solution to anm expensive low rpm buffer - found this - buffer from Harbor freight 39.00, router speed controller Harbor freight 20.00 . tapered buffing spindles -ebay 15.00. Works like a charm - no torque at very low speeds but works great at about 1200 up to 3400rpm (just a guess) great for acrylic too!! All of these can be found on sale at different times!!!!!

It's a relatively cheap experiment, but I was under the impression that doing this on a motor not designed for it would cause it to burn out.

Harbor Freight says this will work on this motor this is what the controller is designed for - working great so far - I'm no rocket scientist though

Originally Posted by greatbolo

Harbor Freight says this will work on this motor this is what the controller is designed for - working great so far - I'm no rocket scientist though

Besides, if you got the warranty it's covered and the'llreplace it. No brained.

Thank you for the speed control tip! The buffer is a great one and can do wondrous deeds. I have had mine for years and my buddy uses eight inch wheels on his and 220 grit and does gun barrels. Hotter than you want to touch and he's done that for years.
~Richard

I was also under the impression it would burn it out

It's going to burn out, it's just a matter of when. Those speed controllers are for motors with brushes. To have variable speed with a normal motor you need a three phase motor and a VFD.

thanks - youre probably right but for 39 bucks its still going strong after a few weeks