Understanding Voltage, Resistance, and Power in a Kapton Heater Circuit
https://blogfreely.net/zerianqvwp/what-to-look-for-when-sourcing-a-polyimide-heater
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