Almost 40 plus hours and here is the final product!
Color off of shell was gone off of chicken egg first, took about 27 hours, then actual shell took 36 hours approximately. It was a cool experiment as it showed how thick the membrane actually is and why it’s so important to not shrink wrap and why it takes them so long to hatch. The duck’s is a LOT thicker than the chicken’s egg. It looks like a shell is still there but it’s just that thick of a membrane.
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Chicken left, duck right