Using Mica Heating Plate in Dusty, Damp, or Demanding Settings

https://thermal-insights.lumenforgex.com/posts/common-semiconductor-heater-mistakes-and-how-to-avoid-them

Many heating problems look like a power problem at first. In practice, the cause may be contact, heat loss, sensor position, or poor fit. A mica heating plate works best when these parts are planned together