Gestation is 3 weeks, and they are weaned at 3 weeks. I haven't figured out how to sex them as pinkies, but when they are fuzzies you can see a double row of nipple spots on the females. Thats a good time to choose keeper for future breeders.
When they are weaned sometimes it can be hard to sex them. I think the males' testicles show up better if they are warm.
You can either separate the males from the females when they are pregnant, or just leave them together. The females are receptive to the males as soon as they give birth, so they can have another litter by the time the first one is weaned. But like another poster said, don't put a male back in with a female with a litter.
Only one male per cage, or they will fight, and the males smell really bad. The females cages get pretty bad too when they are nursing a litter.

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Kent
1.1 Hypo (het lavender, striped) cornsnake juveniles
2.1 Normal (het hypo, lavender, striped) cornsnake juveniles
1.2 Gray-banded kingsnakes, blairs phase
1.1 Oregon rubber boas