Here’s a few pictures of my big water bath. we use it to remelt 5kg metal containers.
It’s a $100 farm feed tank with 1.5” foam insulation on the bottom, sides and top, when set to 70c it will only drop to 50c overnight when turned off.
It uses a 220v 4500w heating coil, and i also wired a timer on it so I can have it start heating up in the middle of the night and be ready to use in the morning.
