Hi,
 
I just use a regular wet/dry shop vac and a variac (variable transformer)
to slow down the motor. Or if you don't have a variac, you can uses a
thyristor motor speed controller or lamp dimmer of sufficient wattage.
Thyristor lamp dimmers are available in electrical stores, but the common
ones are limited to 600 watts, which is OK for a 2/3 horsepower motor or
less.
 
Vacumn Cleaners use brush type motors which are OK to use with thyristor
speed/dimmer controllers. For a 2 HP moter you need a 1500 or so watt
dimmer.
 
Paul
 
"BRONX ANODD" (tm) in organic forms with full American violence emitting,
is three-dimensional curves demonstrate mystic movements as if they were of
unknown life. The body with well trained muscles but no extra flesh dashes
is the dark with sharpened knife-like brilliance emitting. Now, nobody can
stand in his way "BRONX ANODD" has just released hot.
 
-- English language ad copy for alloy wheels from "Option, Communication
Car Magazine", March 1998 issue, Japan.