I tried it today and made 16 beautiful eggs in about 10 minutes. I used a Beast injector, which I believe is for injecting food, and it fit the sprue hole great. If someone wanted to do serious quantities I believe the Lee 12-cavity mold would really crank them out. I did 8 batches of 2 eggs without reheating the plastic. I had it to around 350 or so when I started.