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Unread 02-03-2008, 11:59 AM   #1
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Vacuum suggestions for Bosch Concrete Grinder

I am interested in what everybody likes best to use as a vacuum for the Bosch 1773AK Concrete Grinder. Is is worth getting a good drywall/concrete dust vacuum like the Bosch 3931A Airsweep, Porter Cable, Fein, Festool, etc.?

Are people having good luck with the cheaper ShopVac/Craftsman vacs with the dust bags or washable gortex filter?

Other suggestions?

Thanks in advance.
Matt W.

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Unread 02-03-2008, 05:00 PM   #2
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HI Matt, all I use is a Crappsman with a regular filter. You'll know when the filters clogged. I would imagine you could get one of those fancy vacs, prolly would work better than mine.
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Unread 02-03-2008, 07:42 PM   #3
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i use a cheap vac with a good filter. Not much is finer than drywall dust and it catches it all. Hammy
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Unread 02-03-2008, 07:54 PM   #4
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Hi Matt,
I don't have the Bosch (and I'm seething in envy of yours) but I've found that my Rigid 6.5HP vacuum works well-enough with a dust cowl attachment on the grinder and a length of swimming pool vacuum hose connected to the outlet and run out of the house. With just a "level 1" filter on the vacuum, I catch most of the larger particles without clogging the filter with the finer ones. The very fine dust exits the house through the exhaust hose. But I'm not grinding concrete often enough to need a serious dust extraction system. Where'd you buy yours?
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Unread 02-03-2008, 09:35 PM   #5
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Hi Matt,

I'm also using a Crappsman vac with a Gore-tex filter with the Bosch Concrete Surfacing Grinder. It needs to be cleaned out pretty often (rapping filter on the side of the trash can), but works very well in capturing the dust. However, it seems like my filter is slowly degrading in terms of not being able to clean it out as good as I used to.

As a note, I've added this vacuum hose to my vac because it's relatively limber and lets you move the grinder around without fighting the hose. And it's a must to tape the vac connections with blue/duct tape. If you rely on friction alone, one of the fittings will come loose while grinding and you'll instantly fill the room with a ton of dust. So be prepared for that.
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Unread 02-04-2008, 01:15 PM   #6
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Thanks for all the suggestions. Shawn, I do not have the Bosch 3931A but an older 16-gal Craftsman like everyone else.

I know that when I use the craftsman for drywall, the normal paper filter cartridge plugs up way too quickly so I learned to sweep up the dust as much as possible with a broom and use an old upright vac with cheap bags to get the rest. I also sometime also use the cheap upright to vacuum out what dust I can't shake out from the Craftsman filter.

Knowing this, I simply tried the upright again with the Bosch 1773ak grinder. It work OK but I use a cheap bag about every 4 square feet I grind.

Tonto, thanks for the link to Rockler for the better hose for the Craftsman. The original stiff and short hose has always been the worst part of the vacuum. I think I will also try the Gortex filter this time. I actually have pulled the hose out before while grinding or forgot to turn the vacuum on and made a big dust cloud. I guess this shows just how well the Bosch 1773ak works controlling dust!

I will probably stay with the Craftsman for now and try a Gotex filter and better hose. I would be interested in any other good experiences people have had with Craftsman or Shop Vacs. Has anyone has success with the Shop Vac fine dust bags sold at Lowes? Can they be used on a Craftman?

I am also still interested if anyone has direct experience with the Bosch 3931A Airsweep or other premium vacs for use with the Bosch Grinder as well as there other many uses as well. The reviews sound excellent on Amazon but the price of the vacuum with accessories and bags is very high ($500+).

From my own experience, I finally replaced our $250 household quality Bissel shampooer after repairing and rebuilding it a few times with a much more reliable and better performing $1100 commercial shampooer ($500 reconditioned). Looking back, I wish I never wasted money on the Bissel in the first place. I wonder if it is time to finally buy a shopvac that will last me and not need to be fiddled with.

Thanks in advance.
Matt W.
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