Chemical heating pad

*Hello, All!* An original device that provides heat for a very long time. The point is this. Take 2 teaspoons of salt, 3 teaspoons of copper sulfate (dry), 5 tablespoons of wood sawdust and 1 tablespoon of aluminum sawdust. All this mixed and sealed in an iron coffee jar. To start the process, just pour 50 grams of water into the jar. Mixture reacts slowly and warms up to 50-60 degrees. Duration action - several hours (minimum like 4). It can be used purely for heating the hands. However, if you use your brains, then the scope of application of the heating pad can be expanded. /That’s all, All, you can scroll further.../