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Collimation is over rated - was - Re: My best fine-pitch PCB so far

2006-06-20 by derekhawkins

>Derek - what are you using as a phototool
>to get good 6/6 ?

Epson R320 and Epson transparencies. I have two HP lasers here and 
used them until the dimensional inaccuracies started to get in the way 
of CNC drilling. Actually used laser transparencies instead of vellum 
so was up to my neck with pinhole correction and solvent fumigation 
tricks. My exposure box consists of normal daylight fluorescent 
instead of UV tubes since it had to double as a standard light box for 
pinhole correction. 

--- In Homebrew_PCBs@yahoogroups.com, "Andrew" <andrewm1973@...> wrote:
>

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