I want to give this 3 stars, I really do, but dangit this thing proved itself over the past weekend and made up for my initial frustrations (please read the full review for full details). When I first put it into service, I kept blasting media out of the threads in the cup. No matter how many times I removed and replaced the cup, it wouldn't seal properly. I cleaned the threads multiple times and kept trying to reseat it to no avail. I put some thread tape on it and managed to seal it temporarily and tried actually blasting, and the stream that came out was so anemic I gave up on this thing. The next day, after some sleep and some food, I decided to give it another shot, mainly because I was tired of dealing with Harbor Freight's recent batch of air erasers (wouldn't last more than an hour before something irreparably broke). I removed the cup, cleared the thread tape and removed the gasket at the top. I thoroughly cleaned it all and applied a very light coating of oil around the gasket, on the sides that weren't exposed to the blasting media, and gave it another go. This finally seemed to work as I no longer was losing media through the cup threads. The blast stream coming out of the tip still was somewhat anemic, but once I ran a few cups of AO through it, it opened up to a much more usable blasting stream. Because of the larger cup, I didn't have to stop nearly as often to refill it as I had to with HF air erasers, thus saving me untold amounts of time. I was able to power through work that would have taken me over half a day, within a few hours of time. Would I recommend this to other hobbyists/professionals? Absolutely. Once I got the kinks worked out and dialed in, this air eraser ended up being a powerhouse machine that allowed me to finish my prep for an upcoming event that also happens to be our largest event of the year. Pro's: Larger cup cuts down on how often you stop to refill it, saving lots of time Durable (so far), lasted through many hours of back to back hard work Once working, it worked great and helped power through hours of work Con's: Was finicky when I first got it. Took re-seating the gasket in order to get the cup to seal properly Took a few cups of media through the nozzle before it opened up to a useful media stream Cup threads can be a little finicky and easy to cross thread, take your time and be deliberate when reattaching the cup to the air eraser Verdict: If you etch or do fine sandblasting, safe yourself the headache and buy it.
Rating: [4 of 5 Stars!]