#2156: Brazilbuster

Cracking nuts is nothing like as much fun as eating them.

Today’s invention is a way to get a volume of cracked nuts together for the party season without getting blisters whilst using a conventional nutcracker.

A strong metal box contains a piston (grey) and a space behind this which can be filled with water.

A space in the front of the box can be filled with a layer of nuts of one type (which will be roughly the same size).

This box is placed in a domestic freezer and left for a few hours.

Since water expands by about 10% on freezing (and the box will contract), the effect will be to crack most of the nuts whose kernels might then be manually extracted or floated away from the shell fragments in a pan of water.

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