Homebrew PCBs

I wonder how he processes the film in TOTAL darkness. Anyone know 
where do you buy red light sensitive film  or how much it costs ? 
I got quotes some time ago and it was around AUD$1000 for a pile 
of sheets. Jon Elson notes that his plotter scans at 0.01"/sec 
(0.25mm/sec), which works out to about 5 to 10 minutes for a 
typical PCB at 25\ufffdm image resolution.

Adam

mikezcnc wrote:

> Here is Jon Elson's site. He is a fantastic guy and exceptionally 
> talented engineer. http://www.pico-systems.com/photoplot.html  Mike
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Alexandre Souza" <alexandre-
> listas@e...> wrote:
> 
>>>photoplotter...or imagesetter...using a UV diode because many of 
> 
> them
> 
>>>use a red LED. Jon Elson ha a website where he shows a home made
>>>photoplotter and wrote his own software, quite an amazing design 
> 
> for
> 
>>    Hummm...Link? I looked for Jon Elson on Google and got nothing 
> 
> on
> 
>>photoplotting :o(
>>
>>
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