For the electrolyte I went here: http://www.metaldetectingworld.com/make_electrolyte_p15.shtml
“Just put some baking soda onto a frying pan or a cookie sheet, and bake it in the oven at a little over 300°F (149°C) for an hour. “ You can go to the site for the scientific explanation. I have a lot of baking soda laying around, you can see in my other posts, it worked just fine. 1 tablespoon per gallon.
On a cookie sheet, in the oven at 320 for an hour
I store it in a plastic container until needed.
You will see the results of all this in the Shop Smith Restores.