Homebrew PCBs

Hi Markus
  I ran across a site that looks well suited for this thread and the 
Inkjet printing thread..

http://www.rtcircuits.com/

They have a couple of patented methods of  making (really) printed 
circuits.  The first, they are just printing using conductive ink.  The 
second, and maybe more interesting from your standpoint, they print a 
resistive image of the circuit on a substrate and then plate it.  They 
claim to get circuit widths that are small:
"And Track Widths down to 20 microns are easy to produce."  I really 
like that you are not producing waste copper with this method.  I wonder 
if their ink is stampable?  How resistive is Indian ink, does anyone 
know (Indian ink is pretty much ground carbon and water, isn't it?).
  Is you can see from this post, I'm coming to the realization that some 
type of chemical process will have to occur for me to make pcbs. ;) 
(unless I can get the multilayer laser printing thing going).
  Slap me on the forehead!  Didn't someone say some types of toner are 
conductive?  Does anyone know which ones?  I wonder if they are 
conductive enough to copper plate?  Print the circuit on bare FR-4 in a 
laser printer, and then plate it on.  Has anyone tried that before?  Is 
anyone with a thp system interested?  At this stage, the most I can do 
is root you on and throw out ideas.
Thanks,
Richard

>Hi Caesar
>
>A couple of other people have informed me that they are interested in
>building a similar station. I know for sure that at least 3 people
>suceeded.
>
>I'm now finally aproaching the end of a project that kept me busy for
>much longer I originally thought. I hope this will soon put me in the
>position to further document the station and the latest changes /
>improvements I made.
>
>Markus
>
>  
>



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