If hatching egg is cracked ?

When first time I was having eggs in incubator and accidentally one of the got damaged & cracked. That was the one of the egg from one of my favorite pigeon Fantail. I still become sad when I think what I did with that egg, anyway now question is what to do if any hatching egg get damages or cracked ? Guys no need to worry. As soon as possible you notice damages or crackes just reach out to candle and take some wax from it and use your art expertise to do wax surgery on that egg. Keep that egg again in its place and wait for chicks to come out .