Hairdryer to space heater conversion

I wanted a heater for my 3D printer enclosure, but the super-easy options were all inconveniently large. Instead, I decided to "remix" this hairdryer:
https://www.amazon.com/Conair-1875-Turbo-Dryer-Black/dp/B019FNCXLQ/
(Probably, anyway. Mine was several years old. Hopefully the hairdryer design hasn't changed much.)

It uses these M3 inserts for screw retention:
https://www.mcmaster.com/#94180a333/

There's a hole at the bottom for this temperature sensor:
https://www.amazon.com/gp/prod