Best thing I've found is to spread the sand on concrete in the sun and let it dry. I blast out on the concrete when I can and just sweep up the used sand and reuse it. A little dirt and rust might make it work better. Mine is obviously not an enclosed box type. tom
Just keepimg the sand inside until it is used is a good start. I now live in the desert and dryness is not a problem. But when I lived back in the humid areas, keeping sand dry could be done by just storing it in a trashcan with a lid.
I am using a 40 pound tank blaster from Harbor Freight Tools.
As others have stated make sure the sand is DRY!
I wear a hood and heavy welding gloves. My tail gate is up on saw horses near the garden away from things. It works good on the hard to get into places.
I sift the play-ground sand with a screen thing from Eastwood to get any larger objects out that could clog the nozzel.
The amount of sand used is significant for a blasting session. Someone above stated recaliming the sand which seems like a good idea if you have an area to capture it. Right now my sand is going on the ground with no way to recover it.
I am concerned about getting sand inside of the tail gate as it will hold moisture and rust from the inside out.
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