An incandescent lamp dimmer is a different animal than a universal AC/DC
brush-type motor speed control such as the one sold by HF. They are not
interchangeable.

Bob Swinney
"mclorson" wrote in message
oups.com...
Interesting, I tried to make a similar device using a lamp/light
dimmer and a switch to use on my grinder. The grinder would start slow,
but soon speed up to almost full speed. I couldn't get the dimmer to
control the speed. I assumed I was using the wrong dimmer switch
arrangement. Any homebrew ways of doing this?
-Mike