I haven't tried with a meat grinder but an old manual grain mill is easy to run off a hand drill. An old AC model works great. A lot easier than cranking.
Have you tried cooking the eggs in a pressure cooker? I've done this with chicken eggs. Just set it to the lowest pressure and put the eggs in a steam basket over a cup or so of water. Just bring it up to pressure and let them cook for a couple of minutes. I turn off the heat then and let...
I'm pretty new at this but I have had issues where the chicks wouldn't eat the food without me crumbling it to a smaller size and leaving some on the ground around the feeder.