https://www.youtube.com/watch?v=Nqxjfp4Gi0k loving this. i kind of want to try making some of the 18°C stuff myself;
A #DIY make-at-home non-toxic Phase Change Material that can act as a thermal battery, like a cool pack. it stays at 18°C while it's going from frozen to solid or backwards. That means you only need to lower it to somewhere below 18°C to "charge" it for cooling.
This is a specific ratio of Sodium Sulfate + Table Salt (NaCl) plus something that turns it into a gel (optional but very recommended)
