Newly made large format dry plates available! Look:
https://www.pictoriographica.com
Clean the edge with isopropyl or acetone — just sort of a good practice — then use a small paint brush like what Bob Ross would use for painting happy little trees. I had a chuck or vacuum pen at work that I could put the lens on and turn as I painted, but at home I hold the lens between thumb and finger — gloved of course — and turn it as I paint the edge.
If you mess up you can clean it off with isopropyl and reapply.
Newly made large format dry plates available! Look:
https://www.pictoriographica.com
Guess it depends on the exact formula of Black Cat. Mine dries fast and outgasses fast, even in this foggy climate. There might be a tad of glycol in it to enhance flow. Dunno. But any enamel paint outgasses much much slower. The vinyl used in some enlarger bellows is a vastly bigger problem in terms of glass "windshield smudging".
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