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Ätzwerk files for EAGLE design rule check
Hackaday PCB Design Guidelines write-up
Available sizes for punching vias in the university: 0.6 mm (drill 0.9 mm, pad 1.5 mm) and 1.0 mm (drill 1.5 mm, pad 2.5 mm).
http://www.octamex.de/shop/download/Verarbeitungsanleitung_fuer_Dynamask.pdf