Troubleshooting Slow Warm-Up in Wafer Heater

https://silicone-heaters.readspirex.com/posts/beginner-s-guide-to-mica-heating-plate-what-to-know-before-you-specify-one

A wafer 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