Surface Contact and Bonding Tips for PI Heater

https://thermal-engineering.trexgame.net/beginner-s-guide-to-silicone-heater-what-to-know-before-you-specify-one

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