On 13 Nov 2004 12:57:13 -0800, "nigel" wrote:

Following on from the recent DC discussion ... what is the deal with
static charge buildup with all this dust flying around.

It builds up. If this is a nuisance to you, then ground it.

There's no safety hazard to static discharge (in a woodworking DC).
The two real safety risks are static discharge mixed with flammable
solvent vapour, or sucking up a hot ember into the dust stream.

Grounding is hard to do reliably. An internal wire will suffer dust
erosion. The worst case for static buildup is a metal flange in the
plumbing that's insulated by plastic pipe (it creates a capacitor), so
make sure that such things are earthed by external bonding wires.
--
Smert' spamionam