"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?

I just purchased the Harbor Freight speed control unit (#43060) last week on
sale for $12.99. At that price, why would anyone want to mess with a
makeshift dimmer-switch control? Even if it worked as well, you'd spend more
money just acquiring the parts.

- Michael