Author: ken

There are straightforward ways of doing this. I don’t think I’ll venture into metal casting at home, but I can make a CNC cut a simple 2D shape. Material selection is the question, I cut softer metals but a cutter has a lot of negative space. I may do a thinner metal outline and then a supporting structure or handle.

Ideas:
Fruits
Animals
Ninja
Smile tooth
Fossil bones
Halloween: ghost, skull, skeleton
An open source superhero logo

References: Mold Making, Tetris Ice Cubes, Vacuum Chamber

Design, carve the inverse into something that would make a good silicone mold, make the mold and freeze. You want a vacuum chamber for the mold so there isn’t air bubbles, I have a few vacuum pumps but I question how low they can get the air pressure.

What to mold:
Fruits
Bunny, animals
Penguin on iceberg
Tooth mould
Titanic
Brain
Paw print
Musical instruments
Chess set
Fossil
Halloween: ghost, skull
An open source superhero logo
A person frozen in a slab of ice