[Ronja] Miraculous soldering: tartaric acid

[Karel Kulhavy]

Tartaric acid (weinsaeure, kyselina vinna) is a natural acid
from wine. It's sold as white crystals for home conserving
food.

I tried it for soldering instead of colophonium directly in crystalic
form. It melts on hot soldering iron. Tins heavily
oxidized copper and nickel plated connector instantly. Then I
tried some M6 bolt not sure if zinced or nickeled was also
almost instant, extremely shiny and you couldn't tell the boundary
between tinned and untinned part. Doesn't work on aluminium foil.

I wonder if someone has this acid at home as well and want to try,
what experience he gets.

CL<