When should you upgrade the nozzle in your 3d printer?

I’ve heard a lot of different reasons from a lot of different people on why brass nozzles wear down and what the best ways are to keep that from happening. In this video, I detail what I know, and I invite corrections to any information I may have incorrect.

E3D Hardened Nozzles:

Micro-Swiss Plated Nozzles:

“Why You NEED a Hard Nozzle! Filaments & Nozzles Under the Microscope” from The Hot End:

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