A note on the eggshells...
are you peeling the inside membrane from the shells? It is a pain to do, but it really makes for a cleaner product in the end. No harm if you dont, but one thing I learned is that membrane is one of the best natural bandages known to humankind. Next time you get a cut or a scrape or burn that you need to deal with, peel out a membrane and put the sterile side down on the cut. You will be amazed. The nutrients and growth hormones in this bandage will cut the normal healing time by 66%.
Good one didn't know that. Yes I peel it off in the raw eggshells I collect. I use the membrane in onions for wounds (also good for warts with phosphorus added too ) works !