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Silkscreen question re: exposure times for 250w mercury vapor bulbs


#1
Afternoon good people,

This is one for you silkscreen pros!

Sorry to jump straight in with a technical question but I'm desperate.

I'm using a 250w 'mercury vapour' bulb. The data sheet says it's 'coated'. How long should I expose my silkscreens for?

I know they take 2-3 minutes to start emitting UV...

Joseph