Safety Checks That Belong in Every Mica Heater Project

https://precision-heating.iamarrows.com/beginner-s-guide-to-pi-heater-what-to-know-before-you-specify-one

A mica heater can solve a simple problem: place useful heat close to a part that needs it. The best result comes from a clear plan. Shape, power, contact, and control all affect the final behavior