I broke out an old tumbling machine to tumble some dies and other things that have gotten rusty on me. What would be a good medium to roll them in? The play sand available at The Borg? Sandblasting sand? Something easy to get and cheap, please.
TMN fired this volley in news: email@example.com:
I often use chicken "scratch feed" with a small amount of fine sand added. It's about $6.00 for 50lb, and does a nice job of cleaning and degreasing parts. It's not abrasive without the sand, so if you use it straight, it will work OK for parts with nice finishes.
Why not just use a phosphoric solution like "Ospho?" That said, I use ground corncobs to clean brass with a bit of Brasso polish and plastic pellets for steel hardware. For cleaning rusty tools or car parts I use the Ospho or electroylis
Wes fired this volley in news: firstname.lastname@example.org:
It's mostly cooked corn mash that has been toasted bone dry. It has a few powdered minerals added, and sometimes crushed oyster shells. I've tried sawdust, corn meal, cotton seeds, and a number of "waste" organics. Scratch feed seems to work for the short run about as well as crushed walnet shells, but then breaks down to a "mealy" powder, and pretty much stops being abrasive at that point.
Well I wouldn't give it to uncles chickens since he eats the eggs but the chipmunks can have it. A bit of Lead styphanate from the primers and little lead pellets from the rifles.... Could solve a lot of problems.