Wet sandblasting

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Dec 24, 2004 | 03:38 AM

Ford_Six

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From: The Big, Oregon

Wet sandblasting

Has anybody here used a home wet sandblasting system? I have a pessure washer, and Karcher sells a kit to add sandblasting. I didn't know if it was worth it or not. I know that the commercial ones are good, they use them where I work so there isn't so much dust.

Dec 24, 2004 | 05:05 AM

Steve_B

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From: West London, England

I got the karcher attachment but wish I hadn't bothered
It was very slow to use
I used a small Karcher pressure washer, one of the industrial units may have worked better
I bought a pressure blasting pot and that works fine if you have enough air

stephen

Dec 25, 2004 | 08:54 AM

Bikeitswift

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From: Canyon Lake Texas

I have a pressure pot balster as well, but I wonder what would happen if I added lots of water to the pot to make a wet slurry?? I may have to try that one...then figure how to dry my pot out after! Might wait until 90 degree weather, then try it. Anyone else tried this? I like the idea of no dust.

Dec 25, 2004 | 11:06 AM

Sberry27

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Bad plan, you will have mud that wont go thru the unit, it wont go thru the pot. The water cetainly wont hold the sand in suspension. A wet blaster is a siphon suction unit that pulls dry sand up to the head and it mixes just before it leaves the nozzel. For wet blasting you need a pretty fair washer, I would want 5 gpm at 1500 or so. I think you can get cheapies from Northern or HF. I had one that I lost in a fire that I havnt replaced, it did work quite well actually depending on the application. It wouldnt be good for autobody though or truck frames as you couldnt get it dried off fast and well enough before paint. They worked well for dirty rusty structural work out on the ground.

Last edited by Sberry27; Dec 25, 2004 at 11:08 AM.

Dec 26, 2004 | 04:55 PM

DslRngr

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I've used a 3000 psi 3.5 gpm pressure washer and the siphon sand baster attachment to sand blast truck frames and heavy metal of that type, as well and inside the box of pickup truck beds and it works great. The water helps to keep the metal cool and lessons warping. As stated before you do need dry sand, and you have to have enough to do the job completely or wait untill it drys out. The sand can be reused after it drys out though, and no special sand is required I used regular old sand.

Jan 9, 2005 | 03:13 PM

tdford

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From: Bothell, WA

Does anyone have any experience with adding water to a dry sandblaster? It looks like it should still control the dust even with a low pressure supply of water but I'm just guessing.

Jan 11, 2005 | 05:48 AM

DZL JIM

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From: North East Ohio

We have special adapters that go on our big tips we use for blasting swimming pools, brick buildings, etc. where we're indoors or have neighbors in close proximity. It shouldn't be too hard to make up for a smaller application, it just basically has a garden hose in one end going to a small valve, then a jet that sprays the water near the blast hose exit. Once the air pressure shoots out the hose the water pressure gets amplified and wets down the sand.
Definitely NOT recommended for steel, really only used with masonry work. Blasted steel will flash rust in a matter of minutes, why would you want to dump water on it too?

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