Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "wnnelson0" <wnnelson@...> wrote:
>What i would love to know is how come Volkan can make such fine
>traces and
>i cannot?

The best I have been able to obtain is about 5 mil. The problem I have
is so much liquid is being applied in the reduced widths in an effort
to obtain sufficient resist effect.

>Do you use a single color/head, or do you mix colors using multiple
>heads?

I am using the C84 conversion, all cartridges MISPRO yellow. I also am
working on an R220. This will take some time. I suspicion that I will
have to rig a microcontroller up to some of the signal paths to fool
the printer into thinking it is not in the "CD Printing" mode when it
actually is. Will be interesting to see if there are any differences
in the application of ink, for our purposes. Epson specs both printers
as the same dpi and picolitre droplet size. The R220 is a six color
head though. 
 
>I think that may be a factor, because it is the only difference i can
>see.
>Also, i must try a short microetch to get a surface that takes ink >more
>readily, that may also allow finer traces.

i have access to some 1000 - 3000 grit papers used in Autobody shops
for finishing paint. As I get time I will try a test using the various
grits from 320 to 3000 as well as a 'microetch' If there is
improvement perhaps we can quantify.

>Anyway, it will probably be months until i can get back to inkjet
>printing, and i would appreciate any information at all found by
>other people working on it.