drjo
fully equipped rock polisher
Honduran Opal & DIY Nut
Member since May 2008
Posts: 1,581
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Post by drjo on Mar 13, 2012 11:50:18 GMT -5
Dr Joe, that was long Summer vacation. Ya, but not so much fun Dr Joe .
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Post by jakesrocks on Mar 13, 2012 12:34:40 GMT -5
They use high pressure hydro blasters on nuke subs in drydock, to take the hull down to bare metal. 25,000 P.S.I. I've seen the gun pick a good sized man up and throw him off of a 3 high scaffolding. That much pressure, even with a 6' wand is enough pick a full grown man up and throw him. They used a slurry of around 60 grit Black Diamond blasting grit and water. It would cut a man in two if he was hit by it.
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Post by mohs on Mar 13, 2012 12:49:21 GMT -5
slurry guns are the future! remember! Slurry guns don't polish rocks real Men do! mostly
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dellis326
off to a rocking start
Member since January 2012
Posts: 10
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Post by dellis326 on Mar 13, 2012 21:22:58 GMT -5
At just 50 or 60 psi Tungsten carbide sandblasting nozzles erode at a noticeable rate. There are boron tips that'll last longer but cost more. I don't know if they'd hold up well at a few thousand psi.
As a side note there used to be a youtube video of a guy slurry blasting the paint off the molding inside his house and then complaining about the water damage. He said he posted it as a complaint against the manufacturer who didn't add a warning about using it inside. you can probably guess what the comments were like.
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