Traditionally, Ukrainian pysanky are left whole and simply dry out over time.)We do have one ore two old eggs from my aunt and mother, that did dry out over time. I was told that if the eggs are not perfectly whole they can start to stink so I never tried that. Traditional Sorbian eggs would be hard boiled and given to the god children on Easter to be eaten (and destroyed). Most of the symbols have a deeper meaning of good luck/protection etc.
But it's difficult to empty the shell without getting egg on the outside, and it causes the water-soluble dye to smear. This is a great way of avoiding that problem.Before I new the trick of filling the eggs with dye I did the same. Dipping the end where you get the inside out into wax helps to prevent the smearing but it does not work perfectly as to much hot wax at once can cause some smearing, too.
And thanks for posting the picture of your feather applicators with the ruler - they're much smaller than I expected!I guess those are some of the smaller ones, though not my smallest. Still the feather applicators can't be to big or they do not work well. It gets quite difficult to find the right "timing" to get the wax on the egg without the big applicator sticking to the egg.