I need to make an 8.00”x16.00”x2.70” ice block and need to control the ~9% expansion so that the ice block is a uniform as possible with a standard chest freezer. Using a stainless container as a mold with the top open and an Aluminum weight to hold it down, will make a silicone liner so that the ice can be removed from the mold. I’ve tried insulated the container on all sides and bottom but the center area still bulges out more than I want. Any ideas on how I can get a uniform ice block with an even flat top surface.
Forgot to add that I need to make 20 of these, so layering or multistep processing becomes a lot more time and labor which I like to avoid.
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