Troubleshooting Slow Warm-Up in PI Heater

https://advanced-heaters.scriblorax.com/posts/how-to-test-a-pi-heater-for-safe-and-consistent-performance

A pi 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