I am currently collecting Serama bantam eggs from Penny. I have 7 golf balls in her laying box and my hope is that she will go broody while the eggs (hopefully fertile) are still viable. I don't have a candler, and I can't see anything through the shells with a regular flashlight. When should I be able to see anything? Can someone show and tell me how to build a candler using a tin can? I think I've read about such a device. Pictures will help my slow brain immensely and be very much appreciated. Otherwise, is it possible to purchase a good egg candler locally? Thanks in advance.