Homebrew PCBs

> > It's an article about inkjet printers being used to
> print conductive
> > traces, directly, onto many different types of
> materials, using a
> > silver nitrate solution, followed a few minutes later
> by a reducing
> > agent (they mentioned using a Vitamin C solution), and
> then washed with
> > water to leave only the metal traces.

why minutes later?
wouldn't it work with just two 'colors' mixed dynamically
while printing?

alternate: why not print the nitrate traces, let dry and
dip the whole board into the reducing solution (sort of developing)?

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