How to Maintain PI Heater for Stable Day-to-Day Heating

https://thermal-materials.bearsfanteamshop.com/how-to-test-a-kapton-heater-for-safe-and-consistent-performance

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 pi heater works best when these parts are planned together. The heater itself has limits and strengths