Thanks for the info! I generally try to stay away from applying petroleum-based products to skin (our largest organ, right?), but am considering alternatives to coconut oil for assisted hatch purposes. I tried shea butter recently, but it's too solid at room temperature and difficult to apply. I...
There could be something going on that's preventing the duckling from making more progress...I hope it's nothing serious, but sometimes a late hatcher has a problem like a deformity that makes hatching difficult. Again, that may not be the case at all, but I personally like to be prepared...
How do you like using mineral oil to keep the inner membrane pliable? I've been using coconut oil and like it because it's natural, but have had a few situations where the coconut oil has dried up with the membrane on the hatchling (sometimes interfering with the hatch). It doesn't seem to stay...
I've only had one cracked and repaired egg hatch to date, but it clearly can be done. I use Liquid Bandage, which is probably even more pungent than nail polish.
Best of luck with your egg!