10/29/2026
Part One: WTF is a burr?
As you sharpen, once you’ve removed enough metal from one side of the bevel, a thin wire lip forms along the edge. That’s the burr. It’s just metal folding over the edge to the other side.
You can feel it by dragging your thumb across the edge (not along it!), moving away from the blade. If you don’t feel it, keep working.
Next up: how to remove the burr for a clean apex. Aka, a sharp edge. Stay tuned!