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Tool Talk Discussion Forum

Re using sand from a sand blaster

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John Fila

03-23-2005 04:47:46




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Can I re-use the sand that has been used to sand blast parts of my tractor? The stuff is expensive and it went quickly. Or,,,Can I use some beach sand if I put it through some sort of filter? Thanks in advance for any help you can give me.
John




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Glen in TX

03-23-2005 13:45:21




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
On humid days the sand will attract more moisture too so screen it and keep it dry by putting out some plastic or tarps to catch it. Depending on how much air you have can turn up the pressure and use a larger nozzle on rerun sand and just keep moving the nozzle faster or keep it back farther to keep from warping sheet metal. Beach sand, brick sand, or well sand will only work good if it is dry. Moisture will plug up your blaster fast. Put a bypass valve on it too if you don't have one to force more pressure on the sand in the pot if it gets wet and to help clear plugs.

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Weirsdale George

03-23-2005 12:56:45




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
If you are going to use silica sand, make sure you use a very good respirator. Silicosis is a nasty thing.



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Ron in Nebr

03-23-2005 08:56:53




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
I read once that what the deal is, is if you look at a "new" grain of sand under a powerful microscope, it will appear to be very jagged with lots of sharp edges. Run that same grain of sand through your sandblaster a few times and the sharp edges get knocked off and each time through it gets rounder and smoother. So yeah, you can reuse it, no problem. It'll just take more blasting time to get the same job done. Once it takes too long, replace the sand. By the way, this is also true for the glass beads in a glassbead cabinet that are constantly recycled. Eventually they'll need replaced too.

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OldFarmTractor

03-23-2005 13:25:39




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 Re: Re using sand from a sand blaster in reply to Ron in Nebr, 03-23-2005 08:56:53  
So the sharp ones get rounded and the round ones get sharp?



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Chris(WA)

03-23-2005 07:39:04




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
There is an outfit here that sells ground glass for use as media. Works slick and is way cheaper than sand. I have only reused it once so far and it seems to still cut ok.



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Redmud

03-23-2005 06:37:56




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
I clean and re-use my sand by running it thru a sheet of window screen. you need the steel wire type, plastic screen will work but won't last long. hardware cloth will also work.



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flathead

03-23-2005 06:29:52




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
I usually mix half used sand with half new sand into the blaster. I screen both old and new sand through a sieve made from window screen. The used sand is finer and works especially well on castings and rust pits. The new sand is more agressive and does a better job of knocking of heavy paint build up and scale. Mixing the two is just right for old tractors.

flathead



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Carol Martin

03-23-2005 05:23:30




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
Hi John: I use masonry sand from the sand and gravel company in mine with good luck.. The only thing that I do is put it on a sheet of steel over the shop wood stove and get it good and dry. then run it thru a large kitchen seive found one at wal-mart that just fits inside the big funnel that came with the blaster. I have a large sheet of heavy plastic that I put up against the side of the barn and let it drape down on the ground and out to catch most of the sand.. I find that I can run it thru twice before it is too fine to be effective. Be sure and use a breathing apparatus I get a pickup load of sand for $10.00 goes a long ways..I bought a few bags of regular blasting sand when I started and cannot really see much difference..

Carol

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RustyFarmall

03-23-2005 05:14:43




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 Re: Re using sand from a sand blaster in reply to John Fila, 03-23-2005 04:47:46  
I use the white silica sand in mine, I have found I can re-use it maybe once. After that it just doesn't seem to be as aggressive.



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Johnfila

03-23-2005 09:42:32




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 [email protected] in reply to RustyFarmall, 03-23-2005 05:14:43  
Thanks to all of you for the speedy and helpful responses. I"ll be keeping my money in my pocket by reusing my sand thanks to all of you.



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HJP

03-23-2005 18:42:27




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 Re: [email protected] in reply to Johnfila, 03-23-2005 09:42:32  
If you really want to save money and to reuse anything buy the "black beauty"
It's alot harder thus stays "sharper"
more pow for the buck



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dr.sportster

03-24-2005 17:09:21




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 Re: [email protected] in reply to HJP, 03-23-2005 18:42:27  
And little dust.Im surprised Black Beauty isnt talked of more here.It was $ 7.00 a bag .Not sure lately about the price?



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