A: Eggs come in varying degrees of thickness. From emu to ostrich, people seem to be engraving, cutting, carving and decorating eggs. This is a delicate art form. It's always easiest to use the largest possible accessory bit that will do even the smallest work you have. For eggs, we recommend starting with the diamond accessory bits. They produce finer, more controlled lines and while they will remove some material, because they are smaller and easier to control, they won't remove as much. For more aggressive cuts and grooves, tungsten carbide cutters will also work.