What is Patina? Is it Good or Bad on Your Knife? – SharpEdge

Some knives develop patina on the blade. Is patina good or bad? The patina should not be confused with rust as the former protects the blade, while the latter causes corrosion and deterioration of material. Read more to learn what patina, how to recognize it and how to force patina on your blade.

TSProf K02 sharpens knife to BESS 20 edge (record setting), Page 2

TSProf K02 sharpens knife to BESS 20 edge (record setting), Page 2

Good Patina, Bad Patina

Everything You Need To Know About Forcing a Patina on Your Chef Knife

Everything You Need To Know About Forcing a Patina on Your Chef Knife

Rust vs. Patina - a deep dive guide on a neglected knife : r/chefknives

TSProf K02 sharpens knife to BESS 20 edge (record setting), Page 2

Carbon-Steel Knives: Why a Patina Matters

How To Force Patina On Carbon Knife Blade With Vinegar

is this patina and do you notice corrosion in any of these images? Shirogami #1 used with care for 2 months : r/chefknives

Is forced patina on a knife safe for food prep? : r/Survival