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Tumbling CAST Aluminum

yungautumn107

Plastic
Joined
Dec 6, 2020
I’m new to tumbling but have heard good things if you can get the technique right. Right now I have several cast rings made from aluminum lost wax casting. I am desperately trying to get a smooth mirror finish right now it is satin.

I haven’t seen any posts on tumbling cast aluminum parts.

My process at the moment is plastic green triangles with a little bit of water as lubricant for around 5 hours, I can tell it gets it smoother but not as smooth as I would like it to be. Then after that I do walnut shells without polishing compound because I still need to pick some up. The shells without a compound don’t seem to do anything. And now my cheap harbor freight tumblr is starting to wear from all the testing. Please help.

My rings look even more dulled than when I started, any ideas? Thanks in advance.

https://ibb.co/7tfhMS4
https://ibb.co/Wpk1FN1
 
Last edited:
Pics would help, a tsp of liquid tide will help with the green triangles, clean hot water helps, dont recirculate your water, clean is your friend as material is removed it does not vanish, it sticks to the media and the parts.
Your walnut shells will need compound but at this point they may be foul with the residue from the green triangles.
 
Thanks for the reply, I’ve definitely heard about not using dirty water, I’ll try with the tide, I’ve also added image links, hopefully you can see them
 








 
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