I had the same problem with my DW735. I wrapped a piece of flexible wire around the plastic hose from my planer to the metal ductwork. I used an old wrench on the other end of the wire and it just lays on the floor. It worked for me.
I had the same problem with my DW735. I wrapped a piece of flexible wire around the plastic hose from my planer to the metal ductwork. I used an old wrench on the other end of the wire and it just lays on the floor. It worked for me.
This is possible and I will check again in the morning when it's daylight. My house is 18 years old so i don't know when the code changed to require a pair of ground rounds. The ground rod(s) were put in before the sod was done so the top of the rod is not visible, but I can see the ground wire. I'll give it a good check and dig up the grass to check it.
I'll also try this and see if I can get the static out of the flex hose with some grounding wire/straps. Interestingly, the hose I used for all my machine to duct connections is the clear wire-reinforced. The DW735 is hooked up with a gray wire-reinforced hose, so maybe this hose is just generating a bit more static.
Ground the wire in the hose. It doesn't need to be an elaborate ground, just any convenient grounded metal, like your duct if it's metal.
The problem you're having is caused bu induced charge. The dust rubbing against the hose deposits a charge there. That charge then tries to induce a charge in your body, which acts like one plate of a capacitor. When you touch ground that induced charge is able to enter you and produces a shock.
The hose wire or, as Joe suggested, a grounded wire wrapped around the hose, takes up the induced charge. That opposing charge then shields you from the effects of the charge in the hose.
For some entertainment, don't make a solid connection to ground. Leave a small gap and enjoy watching the arcs while a board is going through the planer.
Beranek's Law:
It has been remarked that if one selects his own components, builds his own enclosure, and is convinced he has made a wise choice of design, then his own loudspeaker sounds better to him than does anyone else's loudspeaker. In this case, the frequency response of the loudspeaker seems to play only a minor part in forming a person's opinion.
L.L. Beranek, Acoustics (McGraw-Hill, New York, 1954), p.208.
The static charge inside the hose INDUCES an opposite charge in you. It's that charge that is going to ground when you touch the (grounded) outfeed. (or, to be more precise, it's you getting CHARGED with the opposing charge) The charge inside the hose doesn't move anywhere except to gradually leak away in the air.
Another approach would be to keep yourself grounded to avoid the arcing. If you have a concrete floor a shoe grounding strap would probably work, at least for a while. It might not last very long on concrete.
Beranek's Law:
It has been remarked that if one selects his own components, builds his own enclosure, and is convinced he has made a wise choice of design, then his own loudspeaker sounds better to him than does anyone else's loudspeaker. In this case, the frequency response of the loudspeaker seems to play only a minor part in forming a person's opinion.
L.L. Beranek, Acoustics (McGraw-Hill, New York, 1954), p.208.
So I was curious and cut open the end of the 4" flex hose and found that the reinforced 'wire' is made of plastic, so this stuff holds static substantially more than the wire-reinforced hose which does discharge some, or all if it's grounded. Well I used up the clear wire stuff so used the piece of the 'cheapo' stuff that came with a tool.
I am tossing it and will buy a new piece of wire reinforced hose...
When my shop vac hose and PVC dust collector piping were new, they carried a significant static charge, inside and out. As they were used and exposed to saw dust, they developed less and less charge until they carried no charge at all. You could probably speed this up by intentionally rubbing the pieces with sanding dust or spraying it with an anti static spray such as used on clothing.
Lee Schierer
USNA '71
Go Navy!
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I rubbed the dust port of mine with a dryer sheet. I also opened up the hood and rubbed the exhaust impeller in it. That seems to be the big source of static in it. It helped a lot but it isn't perfect. I have a long flex hose on my DC that moves tool to tool, so I can't easily run a ground wire in it, but I did ground the spiral wire inside the hose.