For auctions contracted and managed by an Independent Affiliate, K-BID Online, Inc. Checks are not accepted.īy placing a bid on this auction you are agreeing to the auction specific terms listed below in addition to K-BID user terms. This affiliate accepts: Cash, Visa, MasterCard, American Express and Discover. That said, I am going to try this regardless and will share my results, but I'm hoping maybe some else has tried something like this with some success.This auction is contracted and managed by Auction House and James Egge, Auctioneer (Lic 05-15-002). Though I wish I were financially stable enough to purchase the upgrade outright, my reality has left me in the position of trying to reverse engineer it or do without it. I saw some videos on YouTube of guys that picked up the Tacoma Company upgrade kit which essentially converts a HF blast cabinet into a workable unit, but the meat of this upgrade is the gravity fed metering valve that supplies a measured amount of media to the venturi stream. I just purchased a 1" black iron flange, nipple, 45° elbow, 1" - 3/4" bushing, gate valve, 3/4" - 1/2" bushing, and a 1/2" MPT/barb. I know the pot is way more efficient, but the need to continually screen and refill makes it way less TIME efficient. From there, it Tees into the siphon air inlet, and another quick connect to link up the pressure pot. I have a 1/2" water separator from harbor freight, followed by a 2" Sch 40 PVC 2 stage dryer that begins with an over glorified separator and terminates at a large desiccant filter before passing through my regulator. My cabinet is fed through a 1/2" hose that connects through 1/4" quick connects, and though I am looking to get some 3/8" quick connects, I noticed the air feed on the gun (and most others in this class) is 1/4" so it may be a while before I can graduate to the pricey ones with larger inlets. I am using the $20 Campbell Hausfeld siphon gun and tube from Tractor Supply, but I presume it's just as good or bad as all the rest of the cheapos on the market. I only have about 15-20 CFM to work with, so my jet/nozzles are the 4/8 CFM small ceramic set from TP Tools. I built a cabinet from 3/4" ply with a hopper do blast wheels at work. I'd like to dig this thread up to hopefully generate additional feedback. Looks like this style of gun is supposed to run around 90psi, but what works for you? Any tips on making a better feed tube? Some other web sites say the abrasive has to be dry "or else", am I wasting my time with an outdoor setup? Wish there was some way to compare how much abrasive was flowing. Of course it's not exactly the same.Īnyway, it'd be helpful to know how it's supposed to work. I made one that looks like it and it works a little better, but still feels like it's feeding way too little abrasive. That shows a different style siphon tube, with the bottom of the air tube crimped down I assume to increase the velocity and stir up the abrasive to make it flow better into the suction tube. One is the TP Tools page for an upgrade kit: I googled for this topic and found only a few useful pages. Below 90psi it doesn't surge but it feeds hardly any abrasive and takes as long to clean a part as with the surging. Seems to work better with higher pressure, but surges more. I've tried varying the pressure from 70psi to 120psi. I can feel the mass of abrasive - the nozzle really pushes back in my hand when it's blowing a good abrasive stream, and barely at all when it's feeding poorly. Its problem is what I think is called surging, where it gives a good strong jet that just peels off whatever its aimed at - for about 2 seconds, and then blows air for 10 seconds while another slug of abrasive works its way up the feed tube. The air is dry, but the cabinet is in an outdoor shed where I can't control humidity - but at the moment it's bone dry summer in the PNW. I'm using a mix of dupont starblast and 60 grit garnet. It has a 14cfm nozzle and is supplied by a 24cfm compressor. It's a Cyclone brand generic cabinet with a recirculating siphon blast gun & foot pedal valve. I'm spending enough time at the sandblast cabinet that its poor performance is wasting too much time, & need to make it work better.
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