Thanks for posting a photo of the required adapter piece. As a matter of
fact, I have one of those and will get more when I start the PVC project.
Oddly, the part you show in the picture has shoulders on each end for
clamping hose or inserting into the PVC. However, the plastic Delta blast
gate that I have seems to have tapered shoulders on both sides making them
more difficult to firmly clamp hose or insert into the PVC. I just don't
understand the design of the gates and how they're intended to be
incorporated in a DC system. Even if one used just WW parts and hoses
(never mind the PVC pipe), I can't understand why blast gates would have
tapered connections on both ends.
Yeah, they are a pain to connect to anything.
I cut 8 slits in the S&D PVC pipe and then clamped it to the metal blast
gate using a flat stainless hose clamp. It holds it very rigidly because the
metal gate is a solid casting. I don't know how well this would work with
the plastic gates.
I have reduced the static problem to a virtual asset.
I have lined each section with copper wires , connected all the wires in
series to a high speed rotational switch. the switch in turn is conected
to an ac converter which is then connected to the dust collection main drive
So what I have ended up with is a self powered dust collection system , in
short a perpetual motion machine .As you can imagine my shop is absolutely
spotless. At times when I am not using the DC system I just divert power to
the household circuit breaker box . Since I discoved this phenomenon my
whole local community has taken advantage of it and bought dustcollecton
systems even though most don't have shops .
The only major problem so far is we have not found a way to turn the dam
things off,so everyones lights are on 24 hours a day and frankly the noise
of all these machines running night and day is driving us berserk...mjh
One other thing , the build up of static electricity in the DC system
ducting is primarilly due ductal friction. Although to some this is a
disadvantage ,but in the depths of winter[when the temps fall to below 65
degrees in the south] , the ductional friction produces heat .
If correctly managed this can heat the operating space so that no
additional shop heating is required . this has to carefully managed bearing
in mind that the lighter woods such as pine and goncola alves are not the
heat producers that lignum viti or perhaps cuban mahogany are ....mjh
I use the metal blastgates (woodcraft?). On the DC sied I silicone a two
inch pvc pipe section on. This inserts into the (F) fitting on the tee
joint or 90 degree joint. On the woodworking side it is easy to connect
a 4 inch WW hose or a 4 inch metal dryer vent flex tube for spot
collection such as my lathe.
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