[sdiy] PCB making: how to get a transparent foil with real black lines?

[Czech Martin]

Could you please write down the exact type number of the HP foil?
After my experiments, the foil type does really matter. Some foils show 
pin holes after printing, others wrinkles or cracks.
Using some OverHeadProjector foil or the other seems to be no 
solution so far.
 
Some people seem to suggest tracing paper.
I will look at this.
 
And Seno 4006 developer instead of NaOH, because of the improved
handling (less sensible to temperature, not exposed areas can withstand longer).
I've noticed these difficulties with NaOH, too.
 
http://www.electricstuff.co.uk/pcbs.html
 
m.c.

-----Original Message-----
From: jorgen.bergfors at idg.se [mailto:jorgen.bergfors at idg.se]
Sent: Mittwoch, 5. Februar 2003 10:43
To: Czech Martin; synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] PCB making: how to get a transparent foil with real black lines?



>Is there someone out there how can propose a better method
>to get a layout on film?

I use the HP Deskjet 1220C. I think that most of the modern HP inkjets should work, as long as you use HP's tranparency film. The result is not totally perfect, but it is good enough, I think. You can have a look at my results here:
http://hem.bredband.net/bersyn/workshop.htm

Jorgen

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