Made this box for hotwire control on my CNC foam cutter. It uses a XL4016 voltage regulator. I solder the potentiometer. And pair ir with a 3 wire Voltimeter: https://novatronicec.com/index.php/product/voltimetro-dc-0-100v-azul-0-28inch-3-hilos/
The power cable goes on the in port. And the control power goes on the out.
Screw it with 8 m3x6 bolts.
The author marked this model as their own original creation.