Homebrew PCBs

On Fri, 21 Apr 2006 13:38:24 +0200, Len Warner <yahoo@...>  
wrote:

>
>
> Another approach would be to reinforce the ink: copperplate
>
> print etchers of old used to draw with a grease pencil then
>
> dust the image with "dragon's blood" (a resin powder)


Now i finally know a application for that!
I was always wondering what dragon's blood and seafoam dust does on the  
stock list of my chemicals shop.

By the way i asked the inksupply.com people if they had any idea why the  
yellow would work better for our application, and if it is OK to mix inks.  
I wasn't expecting anything, that's what i got:

> *

Hello Stefan,

Unfortunately we cannot really provide any useful information because we  
have no experience with this method of printing. The only reasonable  
explanations we can give you is that the viscosity with the lighter colors  
are allwing to absorb and dry. Where you will find A thicker consistency  
with the darker colors not allowing it to dry and most likely staying A  
liquid on top of the copper. Also we do not recommend mixing the colors  
because it is hard to say the reaction it may have with the printhead,also  
the colors will never come out correctly.

Sincerely,


RobCustomer ServiceMIS Associates, Inc

*>

Well, for what it's worth i wanted to forward it. I think they publish  
those questions anyway in some FAQ so i took the liberty to quote the  
author without permission. Don't try to sue me on copyright charges i'll  
insist it was for satirical purposes ;-)
I did not change the text in any way, it's there just as i got it, just in  
case you wonder....

ST