Hi there I have a HF type of sandblaster unit with the gravity fed system and it pisses me off, 85% of the time the thing is just blowing air with maybe 1 % sand then it will start spit sand for about 30 seconds then nothing I have even a wire inside a cabinet to clean nozzle but that just helps for another 10 sec and back again just to air, is the gun that came with the unit? or just the gravity system is so inferior any help and pointers will be appreciated
Paul
Paul