Heater?

[Fezguy]

I need to work in a cold garage. Is anyone using a heated box to run their printer in?

There is this https://www.thingiverse.com/thing:3833875 and he has a mini heater; you really got to be careful with heaters this close. I really don't recommend putting a heater in there.

I would say a better way is to make an enclosure similar to what you use for FDM printers and add a temp controlled heater and install a smoke alarm just incase.

Alternatively you could try printing the case above remove the heater section, add a second vent opening and setup a heated air flow and fan ventilation system in one. By allowing you heat in, vent out, and full air cycle in one go you can have a controlled printing temperature every time regardless of the outside temp and you'll not have to worry about the chemicals in the air. (With an air filter, you could setup a loop back with an exhaust.)

Just my two cents. I can send you the design.