On Sat, 02 Feb 2013 07:46:37 -0500, Jim Wilkins wrote:

"Mr.B1ack" wrote in message
m...

The solution is to add a grounded metal brush that just barely
touches the belt. That'll drain off the charge. If it doesn't ...
well ... maybe you're not as 'grounded' as you imagine. Get one of
those cheapo outlet testers.

My solution is to tap the work on the motor housing to release the
charge without feeling a shock.

Won't work. The charge is on the outer
surface of the belt, insulated from the
motor housing.

This may seem irrelevant, but if you are
grinding a lot of aluminum, creating a lot
of very fine powder, a serious static
discharge may ignite it - and aluminum
burns *very* hot.

Most belt grinders have a 'fence', a bar
or metal you hold what you're working against.
This is where the 'brush' needs to be.