Response below in anuth'a thread. My fault for growing up in Wes-kon-sin.
Damn time for my Prozac to be on back-order. Can Merck do that?
'Sides, I know how this works.
I show up at the first Cabal breakfast.
Everyone leaves - and I'm stuck with the check (cheque).
Fool me 1,312 times, shame on you.
Fool me 1,313...
I dunno. Ever hold the nozzle 'tween your fingers and make
a high pitched whine that drives the dog nugging futz? Ever
blow open your mouth in front of the kids with a burst of
air? Ever take balls of glazers compound and a piece of
conduit and shoot your neighbors.
Dollar for dollar nothing matches the entertainment value of
Steam, what's up with that?
UA100, wondering just how humorless can people be...
Since we're being so literal Gabriel, the posts won't live forever - not all
of them even get archived. Besides, in a few hundred years there will be
little nanobots to clean up for us - if we are still around that is.
If someone reads those posts, including mine, and takes them seriously, then
the gene pool may be cleansed a bit more to help get us to the year 6500.
BTW, Luigi is renowned for his mischievous sense of humour and the responses
are hardly surprising. I honestly thought he was trolling and not serious at
all, silly me.
|While I was vacuuming the shop tonight, I noticed that sawdust was
|clinging to the hose and nozzle. When I touched the Shop Vac, I got
|quite a shock. There is obviously a seriously dangerous problem here,
|that could lead to sawdust explosions through static sparks, just like
|in dust collectors.
|So my question is how does one ground a shop vac hose? I have googled
|and, while there are many references to grounding PVC pipes and dust
|collectors, I have not seen anything about shop vacs. Have you done
|it? Or do you have any ideas on how to do it? I wouldn't want to be
|the victim of a Shop Vac explosion.
Fortunately, you can't ground an insulator. If you could, there
wouldn't be a piece of electronic on the planet that worked, thus we
wouldn't be having this conversation.
Why carge builds up is explained (more than you want to know) here:
Why an explosion is highly unlikely is here:
One of the problems is that _you_ become charged while vacuuming _if_
you are insulated from ground. Then you touch a grounded conductor
and zap. Most of us these days are walking around in insulated shoes.
In the electronics industry, where electrostatic discharge (ESD) is a
serious problem, they use heel straps that connect to bare skin and
the bottom of the shoe. They then walk around on conductive mats. We
don't have to go this far. Leather shoes and soles on concrete will
bleed off the charges that disturb us. Or just bend over occasionally
and touch the concrete with your hand. I can't speak to wood floors.
Raising the humidity will help, but that is usually counterproductive
to woodworking and in Arizona where I am 6 or 8% RH is not uncommon so
we have ESD problems in spades.
You can run a "grounding" conductor in or outside the hose and bring
the business end to the same potential as the vac or collector, but
you are *not* grounding the hose.
You can buy (semi)conductive hose. There are also topical treatments
that increase the moisture retaining properties of the surface of the
Mr Zagnasty, I'm sorry I called you a liar in my first reply. That
wasn't very nice of me. My brain got <OB Electrical term> overloaded
reading that thread about bandsaw coplanar -ity -ness -something.
An important issue, and one that can't be brought up enough. Safety's
the name of the dust collection tune.
Immersing the entire shop vac in water before turning it on will
eliminate any potential for static buildup. The iono-impediance
factor will approach zero, negating any concern about electron bounce.
If you don't have a bucket of water, de-ionize the shop-vac unit with
the pee out of your sawdust bucket. That'll work _just_ as well.
"It's all about the flow."
I'm trying to get Keith Bohn to invest some money in my new start up
venture that addresses this very issue.
It's mostly just a piece of # 12 wire that attaches to the shop vac
hose at one end.
On the other end is a suppository.
That's why I need Keeter to get in on it.
Lest there be any innuendo concerning this - KB's involvement does not
involve the suppository but the assthetics of the piece.
The color, really.
"...and we thank you fer yer support."
Thomas J. Watson-Cabinetmaker (ret)
Real Email is: tjwatson1ATcomcastDOTnet
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