First mistake, I put this through the dishwasher to make sure it was clean. It distorted the shape so, don't do this!
Other than my stupid mistake, I put it into very hot water and pressed it back into shape.......
I didn't get this to make ice cubes but, as a plaster of paris mould for a day of the dead display.
It was PERFECT.
I have used it time and time again, and it doesn't lose its clarity, shape, definition or, become hard to remove the 'cubes' from.
I KNOW it's not the job it's designed for but, this could be marketed as a high quality mould as well as an ice cube tray!