Kapton Heater Prototyping: What to Review Before Finalizing the Design

https://high-precision-heating.readspirex.com/posts/common-mica-heater-problems-and-practical-troubleshooting-tips

In precision instruments, a kapton heater must deliver heat in a controlled way. It uses a resistive foil circuit laminated within polyimide film. One useful trait is custom circuit patterns. Still, hot spots can change the result