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- May 3, 2017
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https://www.harborfreight.com/catal...e,f,EAFeatured+Weight,f,Sale+Rank,f&q=tumbler
This is what you want for aluminum, the little green pyramids. You must run it wet or it will turn black and glaze over. I use water and ivory dish soap in a recirculating pump.
I use the same system but got it from Eastwood about ten years ago (mine's the 5 lb. size). About $20 more than Harbor Freight, but it's lasted a long time. No complaints. Does a great job. Throw in the parts, turn it on, go do something else, come back, and it's done. The only issue might be size capacity. They make larger sizes, but for my purposes (mainly nuts/bolts/small parts when dismantling an old car) the size I bought was fine.
Regards,
Terry