Surface Contact and Bonding Tips for Semiconductor Heater

https://precision-heaters.talesignal.com/posts/beginner-s-guide-to-ito-glass-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 semiconductor heater works best when these parts are planned together