The file 'Rocket Egg Holder 3D Printer Model' is (stl) file type, size is 1.9MB.
Measured foo's egg cup after printing, then redesigned in OnShape.
https://cad.onshape.com/documents/05a79b48326cdab3be7b08e8/w/169ea5bc21fc431b628d0105/e/fb96ce25ce575b8aec44d62e
Fun!