Developing is done in a fluid
by letting the fluid flow in waves
over the board. The time must be
figured out and is depending of
fluid strength an temperature.
Unluck is when all is erased in no
time at all. I do a small test peace
and a few minutes.
Seller of board recomends
usage and concentration.
Soda is generally working fine in
low concentration
Keep children away.
Developing shall show the desired copper
pattern as covered with a thin film.
