@signaturefish @catsalad "Thermal Runaway" == it continued heating up when it shouldn't. might trip a protection system and shut down (prusa brand 3d printers do this if the heatbed or hotend rise in temperature to more than ~20 kelvin above their set temperature if said temperature is sufficiently high (so that it doesnt trip when setting the printer to cool down) and start cooling down and abort any ongoing print) or might just catch fire.