If you do cut, don't do it early. There are tons of threads on this forum where people lost babies because of cutting early. In the incubator, you have a warm moist environment that is perfect for breeding bacteria. Once you cut that egg, all kinds of gunk can get in there and do damage. Leave them protected inside their egg as long as you can hold out.
Breeding ball pythons is a test of patience. You need to learn to wait. Then just when you think you've got the waiting thing figured out, you gotta wait some more.
I used to cut on day 57 or 58 because I was inpatient. The more I do this, the longer I wait. Most of my clutches now emerge on their own - unless it is a really good pairing and I can't help myself. Then I cut, but never before day 57. I too find that if I wait for them to come out on their own, I get a better feeding response. Like Dave Green said, it is just my observation and I'm glad to see someone else had the same observation.









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