No, not at customs, after you've built it.
When I first started this I really did'nt expect to buying lasers induvidually and thought I was to scared to get anythign over 100 mw in case I burnt the house down.
But now it seem the laser I am building will be a touch over 0.6 watts. ( For me this is big )DZZZZZZZZZZ
But when I'm fisnished, how do I specify the laser's power?
Do I add up all the MW's and say "oooh, it's 640mw of power" or should I measure the actual output. Do people use both, are their names for these two power readings?
Graham