Hi guys,
The good news is that I received the FART (Frankford Arsenal Rotary Tumbler) yesterday evening, the bad news is that the magnet that they make is out of stock, so I have to wait for it. As some of you know, dealing with the pins and magnets is a little tedious. So, after dinner I ran a batch of 308 cases.
The instruction say it can handle 500 cases, I did about 210 cases (6 pounds) because that's what I had segregated to be cleaned. I used 1.25 gallons of water (according to the instructions), 1 oz. of Blue Coral and 1/4 teaspoon of Lemi Shine. It weighed 25.25 pounds, the tumbler has a capacity of 30 pounds.
I plugged it in and cranked the timer and off she went. The first thing I noticed is that it spins a little faster than the Thumbler Model B, about 20% faster. This morning I got the brass out and the flash holes were even cleaner that the red tumbler, up from 95% to 98% of virgin brass. However, the brass was not as bright. A side by side comparison verified that, the water was really dirty. My guess is that because there were a lot more cases the water reached a saturation point with the carbon and some of it got left on the cases, hence a little duller in color. My next batch I'll use 3 pounds of brass and see how that works.
Regarding the tumbler itself, it is a really nicely made product that should have a long service life. I just opened the box, no assembly required, it has rubber feet , so I didn't have to make/used a rubber base to dampen the noise/vibration. No O-ring to break, no motor sticking out of the side. You don't have to worry about the wing nuts hitting the side, and no drum wobble. The rollers are rubber/plastic and look to be well designed and durable. Another nice thing is that you just unscrew one of the caps instead of messing with 6 nuts and washers. Another nice feature is the built in timer. And here's the real kicker: because it comes with a bag of pins included it is actually about $35 cheaper than the Thumbler Model B and pins.
All in all I believe that Frankford Arsenal has a winning product on their hands. Now if they would only send me the magnet I would have it made. This is not an incremental improvement over vibratory cleaning this is a huge leap forward.
Joe