"Morgans" wrote

Get creative. A weed eater motor driving a car alternator that had one of
it's three diodes go out, and had to replaced comes to mind. Combine that
with an inverter, and you have your needs met, for only junk parts.

Something else I just remembered. I think instructions are out there to
change the output of an alternator to 120 volts DC. The heater does not
care if it is getting AC or DC. You would not even need an inverter, then.
--
Jim in NC