Muffle Box Furnace
From Pumping Station One
Notes
Plug in to turn on, set the temperature to set the temperature. The furnace can ostensibly get up to 1500C/2700F
You probably shouldn't put things in the furnace that have any potential to spill.
Safety
The switches and power indicator light on the front panel are not connected. Unplug the unit before opening the door. There are no safety interlocks on the door and there are exposed conductors in the chamber which could potentially be lethal.
Documentation
https://wiki.pumpingstationone.org/File:Lindberg_furnace_found_paperwork.pdf
https://wiki.pumpingstationone.org/File:PID_Temp_Control_Manual_2216e.pdf