Sand Blaster Guns

I have actually 4different ones, one like your blue one, always worked good with the silica sand, but i guess that plugs your lungs, cant find it by me anymore, northern has this junky stuff thats way too fine, call it coal slag, dont get it, it clogs that gun and doesn't cut!!! The black beauty stuff works nice, menards used to have it, but i think they have the coal slag too, but its a little coarser than northerns, i also have a cabinet i made, with a suction system, and it needs that vibrator to work good otherwise its lind of frustrating, the pressure pot one works best, i also have one with a rubber boot on the end made by vacula, if you have some small spots or don't want to make a mess you press the rubber into the piece and it self recycles that one also works nice.