Clean cases, as in really clean cases. Low noise level allows operation inside home. No dust. Never heard of anyone wearing out the pins. Only cost after buying equipment is dish soap, Lemishine and water.
Initial cost of equipment is 2 to 3 times higher (this will be offset over time by replacing the tumbling media - cob, nut, dryer sheets, NuFinish polish, etc.). Advanced planning is required to allow time for drying. I invert the cases in skeleton bullet holders scavenged from used ammo boxes – got to love dumpster diving at the range if you’re a true brass rat. There is a lot of noise (as per spousal unit’s sworn statement) when the brass is vigorously stirred during rinse, pin separation and shaking of excess water out of brass.
How long does it really last?
Four years ago I started with 24 ounces of stainless pins in my three pound tumbler barrel. I estimate the tumbling time to be around 500 total hours to date. No pins have been added. Original pins are looking good and going strong.
Is it worth investing in?
Beauty is in the eye of the beholder. I had low startup cost since I had the Thumler from the kids’ rock tumbling days. I only had to get the pins and a new drive belt, so it was worth my small investment. I seriously doubt that the stainless tumbling will make any bullets go straighter or further. Opinions will vary.
Does it polish brass without the need for liquid polishing solutions?
Nope. Will need dish washing soap. The true stainless pin aficionados all swear by Dawn dish soap; however, the cheap Wal-Mart Great Value works fine for me. You will also get better results with a small amount of Lemishine (or citric acid I’ve been told). If just water is used the brass will be clean, but will often be discolored (as per the times I forgot to add the dish soap and Lemishine).
Can I use it in my Frankford Arsenal vibratory tumbler?
Nope.
Is it only really used for that black, aged brass you find at outdoor ranges?
All brass. Cleans inside and outside. I do pre wash the range brass to remove mud, sand, small gravel, grass, spider webs and other detritus.