OK so first mistake was buying one of those cheap Chinese sand blasters on EBay- when will I learn that you get what you pay for. Anyway I`m trying to understand whats going wrong. Its not emmiting any sand. Instead of all the air coming out of the gun nozzle it`s also blowing out the pick up tube connected via the flexible pipe from the sand pick up pipe to the gun. All apertures are totally clear. Its been like this from new. Compressor set at 10 bar. Any suggestions please.