Poor boy approach-build a shallow tray to dry it in the sun really well, then run it thru window screen to get out big chunks. Make sure you wear something over your face(respirator/mask/rag) to keep from breathing that crap, you can't sue 3M for silicosis if you dig up sand at the beach. I was afraid of warping panels so I just blasted thehard to sand areas & DA'd the rest. Brian
