Quote Originally Posted by Reefsider416 View Post
I was thinking a simple starter solenoid/relay from a car or boat would do the job maybe...
MOSFET is the name of the correct part you need here. Because PWM circuits need to be solid state or they will wear out and fail. And solenoids are mechanical in nature so they will not respond well to the pulses of power. I personally am a big fan of the ones made by MKS as they seem to come with the largest heatsinks. You can also use one to drive a heater cartridge for your extruder if you like. They are cheap. Here is a fleabay ad for one: https://www.ebay.com/itm/3D-Printer-...UAAOSwv-ZZ5lXX