I have a feeling that the Black Beauty/Black Blast (just coal slag) might be more abrasive than silica. It is quite aggressive but leaves a nice finish that is ready to prime. I've seen sandblasted surfaces that were so rough that they needed to be sanded before priming. I've heard from several people that the silica leaves very fine microscopic residue imbedded in the surface that can cause paint problems and that the Black Beauty doesn't.
Houston, there are two different types of Deadman guns, you apparently have the old type. The one that many of the new small inexpensive pressure blaster are shipping with is the Maxus that I show in my webshot. I’ve seen normal wear of blasting nozzles since I have used the blast cabinets for several decades. You should get many days worth of use from a nozzle before it wears out. And as I’ve already mentioned it’s the rubber and steel parts that are eroding on these guns. From what some of you other guys are saying it seems apparent that they have had the same problems with theirs also. The get-around is to either replace the gun or eliminate it altogether as 32fire2 admits to.
Denny Graham
Sandwich, IL
