H F Sandblast Cabinet won't suck

ya know what, i friggin enjoy basting stuff, and my friend has a REAL nice blasting cabinet, and its big. has a huge dust collector and 3 phase air compressor that moves some air!! it will turn on, catch up, and shut off, no need to stop blasting, wait and then continue! he has all kinds of media for different stuff, plastic for paint, glass for rust, aluminum oxide, black garnet, and a mix off all for stuff...thats my next purchase, i wanna nice big one for myself....one day..one day...