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Mines just an el cheapo off TM, no degas or heater, can do 15-20 depending on case size and runs for 8mins. I do 3 cycles per batch of brass so 24mins n the water is pretty hot at the end.

I just lay them on a tea towel, cover with other half and roll them. Then grab the missus hair dryer n give each one a blast on the inside then finish them off in the tumbler

This is my process
1. Anneal
2. Size/deprime
3. Sonic clean
4. Dry
5. Tumble (i like shiney brass)
6. Load em up.

I found a mix on an old post on here,
1/2 teaspoon citric acid