From Prototype to Production- Scaling a PI Heater Design

https://heating-elements-pro.inkharbory.com/posts/beginner-s-guide-to-polyimide-heater-what-to-know-before-you-specify-one

A reliable setup with A pi heater begins with simple questions. What part needs heat? Where can heat escape? How will temperature be measured? What happens if the load changes during use? Those questions keep the design tied to real conditions