Sphere Ice Cube mold

Wanted to test out the SUNLU TPU and designed a spherical ice mold to do so. printed great at 230c, 60c build plate and 30mm/sec. I use a little food safe silicone to ensure a good seal and the funnel to fill it. It works best if you fill it a little more than 90% to account for the 9% expansion of the water when it freezes.