HackerTube / Video
Antique 4x5 camera creates 20 micron photolithography masks: Super tiny tax form
Applied Science
Ben Krasnow of Applied Science uses an antique 4x5 view camera to make high-resolution photolithography masks in a home shop. He photographs a poster-sized printout onto litho film to get features around 20 microns.
Cited as an accessible way to make lithographic masks at home, in threads about hobbyist chip fabrication.
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