Project Habakkuk aimed to build a massive, unsinkable floating airfield using a revolutionary ice composite called Pykrete. With Winston Churchill’s support, a prototype was built in Canada ...

You might want to make some bars of plain ice, to have something with which to compare the strength of your pykrete. It is advisable to keep the ratio of material-to-water the same for all of your ...

Rather than using straight ice, he settled on using a composite. Inspired by Pykrete, he swapped the wood pulp for cotton fibers. After weighing out different percentages of fiber to water ...