Angle grinder RSG

["Daniele Bortoluzzi" <dbortoluzzi-at-sogeda.it> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Hi all,
great job ! list is up again we are all on the run again :)
 
I am planning to do a RSG using a cheap Angle Grinder  I had for 15$...
11000 Rpm, 600 Watts of power, 230 VAC powered.
I want to reduce and regulate  rpm by the use of triacs... the motor is a brush
type,
and I have seen lots of kits for this purpose...
I will spin a plexiglas disc  250mm diameter, 10 mm thick, 4 rotating
electrodes, 2 stationary.
 
Do you have any suggestions ?
 
tnx all again
 
ciao
Daniele