Homebrew PCBs

On Sun, 04 Mar 2007 22:55:27 +0100, Jim Hutchinson <jhutch17@...>  
wrote:

>
> I'm still learning ... if you have a good "rip-off" paper why not say
> the make and source so I can have the same results ... I have used some
> commercial  image transfer paper and the results was not remarkable ...
> I have also pulled the paper off when it is still hot (about 30 seconds
> after transfer) ... this leaves half the toner on the paper and pin
> holes are a problem ... a very thin coated paper used in magazines I
> think would be near "rip-off" but I have not found any where I shop ...
> Jim KI6MZ


I'm now using verbatim glossy photo paper A4 100 Sheets 210x297mm 150gsm  
for use in inkjet printers Reorder number 38996
It can be seen here but i do not know the life expectancy of the link,  
click through to printer connsumeables, inkjet paper from the root if it  
has perished.
<http://www.verbatim-europe.com/index/product_view.php?menu1=product&menu2=161&menu3=264&lang_id=1&article_id=264>

This paper is relatively thick, but the glossy surface allows finer  
resolutions and no pinholes in large black areas. It is not extremely easy  
to remove, but with the right method it's quick. For copper transfers  
immerse the paper in water, scratching the back side helps. A few seconds  
is enough, but if you have other stuff to do leaving it a couple minutes  
makes things easier. Then start to roll the paper away with your thumb.  
you can either start in the center by wearing a hole through the paper by  
rubbing, or you can start at an edge. You should print a wide outline  
around the real PCB especially if you start rolling from an edge. Once you  
have taken off the first roll there will be wide flakes of paper left in  
some areas where the paper has split. If you have only moistened the paper  
a few seconds dunk it again to get everything wet. Roll the larger flakes  
away too. Now take a piece of flexible foam rubber. Firmly rub the foam  
rubber over the board. This will take away all smaller flakes of paper,  
and if you rub slightly more you can get a jet-black finish without  
residue for decorative transfers, using this paper. Now etch.

I have gone into as much detail as i could, writing this took much longer  
than the actual process.

ST