I hope it works. None of my cracked or chipped shipped eggs that I tried to repair ever hatched.
Many years ago (like 1999, I think), I had a nest of wild mallards under the boxwood by my front porch. When they were about halfway through the incubation, something killed the mother during the early morning hours. I found the nest like 7:30 in the morning, with the dead duck out in my lawn.
The eggs were still slightly warm, so it hadn't been too long. Two of the eight eggs were cracked completely around the middle, fine cracks, nothing oozing. I just covered them with scotch tape, and put all 8 into my old, unreliable foam incubator. About 2 weeks later, all 8 hatched, and I released them into the wild when they were about 3 months old and could fly well.
So, a cracked egg CAN develop, at least once in a while. But, I guess I just had beginner's luck. All I've gotten since then have been stink bombs.