I use an antique 4x5 view camera to create high resolution photomasks in my home shop.

Source of film and developing chemicals: https://www.freestylephoto.biz/531345...
Possible source of poster-sized printouts: https://blueprintsprinting.com/pricing/
Gold on microscope slide: https://sci-hub.tw/10.1109/MEMSYS.201...
Commerical microelectrode arrays: https://www.multichannelsystems.com/p...
Vacuum film holder: https://web.archive.org/web/201110161...
Test patterns: http://www.bealecorner.org/red/test-p...
Thought emporium:    / thechemlife  
Huygens Optics:    / huygensoptics  
Sam Zeloof:    / szeloof  

Support Applied Science on Patreon:   / appliedscience