Hi Nino,
Awesome as usual. Do you tumble before you plate or do you go directly to the plating ?

The parts are cleaned under the tap first, then they go in the Ultrasonic Cleaner for 2 cycles. Then soaked in a Simple Green solution. Dried with the air compressor. From there, they are soaked in an anti rust solution. Next they are soaked in a pickle bath (Hydrchloric Acid) to remove any old plating. If needed, I use a wire brush or wire wheel to completely clean everything. It is then soaked in a parts wash solution to prep for the plating process. Finally, when ready to place in the bath, the parts are left in a distilled (or rainwater) bucket. Then the plating starts. When that is done, they are removed from the bath and left in another rainwater bucket for 10 minutes, Then hung out. Four hours later, they go straight into the tumbler with fine media for 2-4 hours.

sounds like a lot of work, but if you are doing lots of parts, and you want everything to look new - it is mandatory.