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

From: "derekhawkins" <eldata@...>
Date: 2006-06-21

>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:
>