Originally posted by Lidmotor
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Making the two crystals into one makes all the difference. One good experiment to try when the cell is fully dried is to take two different electrodes like copper and aluminum(or magnesium) and connect them to your volt meter. Start to poke the cell with the electrodes and see if you get a good voltage. You want to see if the skin of the cell is conductive.
Mixing two crystals into one crystals is how my stove top cell and glue cell works. The stove top cell heats up the borax and alum to where they release water and all three crystals form into one. The glue cell uses the water from the glue to mix the Epsom salt and Salt substitute into one crystal. I find that using water to mix many crystals into one key to a good cell. But make sure you fully dry out you cell so you can eliminate the galvanic reaction, its the water that does the corroding.
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