I think the wire from you to the machine is good.

Further grounding of the machine is also advisable.
Don't trust the electric power wire.

Christopher A. Young
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"RogerN" wrote in message
m...

Either the belt's not at ground or your hands not at ground. Try connecting
a wire from your hand to the frame (might want to use a resistor to limit
current) and see if the sparks are stopped. If you are grounded and the
machine is grounded it is the electrical equivalent of a wire connecting you
to ground, the same potential (should be) as power plug ground.

RogerN