> On Jan 31, 2021, at 5:51 PM, Mac Doktor <themacdok...@gmail.com> wrote: > > I finally got a macro program and used it to do all of the mousing for me. > LUXURY.
I hit send too soon. At the time I was working for a local printer. My workflow was to draw the board at 200%, print it out on their 300DPI laser printer, and shoot a negative at 50% with their enormous old camera. This increased the resolution to 600DPI and smoothed out the edges of angled traces. Analog anti-aliasing. I used the negative to expose pre-sensitized blank boards and etch them. My etching tank was a deep Pyrex® (borosilicate glass) baking dish with a long aquarium aerator "bar" in the bottom. This was connected to an air pump with a bleeder valve that I used to vary the pressure and therefore the amount of bubbling. This in turn agitated the board so strongly and evenly that a perfect etch (with used ferric chloride) only took a few minutes—unattended. I set up my Unimat as a miniature drill press, clamped the board on the milling table, and used the precision feed-screws to drill perfectly spaced and aligned holes. Those were the days. Terry Bowman, KA4HJH "The Mac Doctor" https://www.astarcloseup.com/ “...the book said something astonishing, a very big thought. The stars, it said, were suns but very far away. The Sun was a star but close up.”—Carl Sagan, "The Backbone Of Night", Cosmos, 1980 -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/2F747440-EBAD-46F4-8AAB-E62BB89209B4%40gmail.com.
