Rubber Ducky Ice Cube Tray

So maybe you want to make large spherical ice for drinks And you are a deeply silly person, and would actually prefer a rubber ducky shape. And you have a 3d printer, so you want to use it. Only if you just print an ice mold, the plastic may or may not be food safe, so you aren't so sure about that. So you want to 3d print a mold that you can use to make a mold out of a food safe mold making material, such CopyFlex from www.makeyourownmolds.com. Scale this to the size you like, print it (it is an easy print, no supports needed, etc.) with any material you have handy, pour your mold-making material into the mold you just printed, and start making ice.

A few notes: spray your 3d printed mold with cooking spray so it is easier to get the mold out. You can also divide this print in half, and print each half of the mold separately. To maximize the size of the duck if you want to.