Blue Bowl: Thoughts if their worth the time & money?
03 Jun 2020 01:05 PM. A Blue Bowl is often regarded as one of the more efficient devices to clean/separate very fine gold, but a slow process that requires screening down to about 50- or smaller, the material should be as clay free as possible, and to remove as much black sands as possible before using. They are VERY finnicky to set up and run ...