[millman52]

I have a small tumbler that the drum is made from expanded metal. I have it perched over my Safety Kleen parts washer tub. I have never used it for aluminum but steel parts turn out excellent.

I usually stert them tumbling, splash them down with a bit of cleaner, tumble for a few min then run fluid over them for a couple min. to rinse them off.


Below is a pic of some 1 3/4" X 2 3/4" X 3/8" steel parts that were tumbled about 15 min.