I have one of these also it isn't too bad after I hooked up the shop vac to it. I put 4 speaker magnets on the inside funnels to catch the metallic debris to save the media a little longer. that works GREAT! I also got a much better gun than the stocker that comes with the HF unit (it's junk compared to almost any other SB gun), I think I purchased it here tptools.com
and the link to the s25 gun http://www.tptools.com/Trigger-Operated-Power-Gun,2189.html?b=d*8026
I got the medium but could have used the small one also. since I have an eaton (real 5 hp baldor motor)compressor that flows 18cfm @ 125 psi and do mostly glass beading and very little silicate or slag blasting and use a lot lower psi to clean things up with.
