Thanks to you guys I decided to join the New Years hatch-a-long this year, and boy am I glad you did so ;)
Put 20 Black copper marans eggs in my homemade incubater. There were chicks in 11 of those (hard to see with brown eggs).
1 never made it out of the egg. I helped it a little, but it still died.
1 almost died on me, but it's getting better every hour passing by (walking, eating and drinking)
9 are in perfect condition.
So... 50 % hatchrate. Not fantastic, but still pretty good considering the season.
Easter is a early this year, so I'll still have to paint the eggs myself for easter ;)