Homebrew PCBs

On Tue, 13 Jan 2004 20:49:17 -0000, pebo festus <mebo31@...> wrote:

> i was just wondering if any one has tried putting water glass (sodium 
> silicate) in a printer cartarage, printing the traces, then expose the 
> water glass to carbon dioxide to make it harden, then etch,
> i havent tryed it yet but will soon, i wiil put a dot on a pcb and (i 
> have some gas to corbonate beer with)and harden the dot.i will see if the 
> water glass will desolve in the etchant.  am working on a repeater for 
> the ham club now and dont have time. if any one has tried this let me 
> know,so i will not have to reinvent the wheel.
> mebo31
>

i tried acrylic floor polish in a hp bubblejet (thermo-head).
did not work. head gummed up instantly.

try a piezo-based head only...

i don't know if water glass is different in the result.

I had no piezo printer so i never tried further...

good luck...

ST

oh, jes, there is some company now making ink exactly for that, and heads
for it too.... in the archives may be the link...