I tried one of these for drywall sanding as well. The problem I encountered was
a continual buildup of static electricity. I kept getting zapped, and now that
you mention it, I experienced that high drag condition as well. I didn't last
past the shocks, though.
"Kai M. Radicke" wrote:
> Agreed, use your shop vac, but I wouldn't hook your cabinet right to the
> shop vac. Home Depot sells a kit used for dustless drywall sanding
> consisting of a 5 gallon bucket, a special top with an inlet and outlet and
> a shop vac adaptor. The bucket gets filled with water so that it just
> covers the hose that hangs into the bucket on the inlet side. The outlet is
> connected right to your shop vac.
>
> I have a 6HP / 20gal Shop Vac and while this product was useless for drywall
> sanding it works great connected to my blast cabinet. All of the dust from
> the cabinet is caught in the water and none of it enters my shop vac.
>
> If you go this route, empty the water in the bucket every week or so. When
> it gets dirty it smells horrible and all of the crap settles to the bottom
> of the bucket and forms a very silty layer that is not fun to clean after it
> builds up a lot.
>
> If anyone is wondering why the dustless water collector didn't work for
> drywall sanding, it is because my shop vac developed so much suction at the
> drywall sanding pad that comes with the kit (connected to the bucket) that I
> would be so tired after doing an 8ft seam that it was just slowing me down.
> It felt like I was trying to move 200lbs up and down over the wall.
>
> The price of the kit was $25. You can build your own though, out of a
> couple bits of cheap vacuum hose and a used (clean) 5 gallon bucket and lid.
> It would be worthwhile to make the trip to Home Depot to check out the
> product picture if you're having trouble visualizing what I am describing.
>
> Kai
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