Sand Blaster Guns

Like mentioned, these are only good for spot blasting. Its really all they are meant to be.
I have one of the small harbor freight cabinets. I sealed it all up with seam sealer. Changed the gun, added lighting and added a vibrator. The thing is rock solid. I use this one for all my small parts.
My medium cabinet is about 4' and is a scat blast. My large cabinet is a 6' wide scat blast. All blast cabinets will require some tuning to get them working good. When they are not working right they can be frustrating but when they are right its the best tool in the garage.