FeCl3 pcb etching machine prototype based on a Lyman Turbo Tumbler I had lying around in the shop (demonstration with water).

Normally the Lyman Turbo Tumbler is used to polish things based on a construction with an unbalanced motor which has a bowl on top filled with abrasive material and the thing to polish.

But why not use it for etching avoiding to have to shake the bowl with the etching solution all the time and simultaneously have a much better distribution of the etching solution?

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