Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Well, it looks to me like someone with an epson printer that has
durabrite ink has to give this a go.

The ink is resisting the ferric chloride for a while. Then, it
starts to breakdown and the etchant starts to eat away at the
copper. So, it does appear to work for a while.

I certainly can read my name from the previous etch test. However,
I also drew a box and some lines around my name with a sharpie.
When I run my finger over the board, I can easily tell the
difference in thickness of the copper. The areas that were masked
with the sharpie are much thicker copper than with the ink.

The problem with my tests is that I have no way to consistantly
control the application thickness (Film thickness) of the ink. So,
in areas where the ink is thick, it protects good - I suspect. This
also appears to be the case where I tried another "Flood fill"
area. Some areas resisted well, others etched through like there
was nothing there.

So, I really think the next step is for someone to try it on an ink
jet printer. that will provide consistant thickness of ink and of
course, something accurate to see after the etching.

that's all I got folks.

Chris