So is boric acid. I wouldn't drink it even if mixed with the best
Very true. Methanol is toxic, but it does not mean that it should not
be used. If you drink it, you will loose your eyesight. Like in
everything, one must know what one is doing.
About dissolving boric acid in alcohol. I am coming from the culture
where alcohol is too valuable to waste on such foolishness. So here
is what you do.
Take a stainless steel pot. The size would depends on the size of the
work you do. Fill it 2/3 with boric acid. Add borax until it almost
level with the top. Add as much water as it take to cover everything,
but no more. Bring it to boil gently and simmer until everything is
dissolved. Dunk you work in hot solution and you have the best
covering money can buy. The solution is kept hot all day, and water
must be added as it evaporates. That is the old time technique, but I
guaranty it will work like a charm.
The layer of boric/borax mixture will be quite thick and may, in some
cases, interfere with soldering. Combine your water solution with
regular alcohol (what a waste), one part of solution with 2 to 3
parts of alcohol, depending on your needs. Now you have solution
which can be conveniently used at the bench. When it cools you may
get some deposit on the bottom, but the liquid would contain the
maximum concentration of boric acid and borax mixture at the ambient