From raw steel to razor edge: the craft behind every Medeiros knife
Every knife starts as a piece of raw steel — but turning that steel into a precision cutting tool takes skill, patience, and a deep understanding of metallurgy. Here's a look at how a handmade knife actually comes to life.
1. Choosing the steel
The journey begins with steel selection. At Medeiros, we work with high-carbon steels prized for their ability to take and hold a razor-sharp edge. The steel's carbon content, hardness rating (measured in Rockwell C, or HRC), and grain structure all determine how the finished knife will perform in the kitchen or field.
2. Profiling the blade
The blade shape — or profile — is cut from a flat bar of steel. This can be done by hand with an angle grinder or by precision cutting. The profile defines the knife's silhouette: the length of the blade, the curve of the belly, the shape of the tip.
3. Grinding the bevel
This is where the magic happens. Grinding removes steel from the flat bar to create the bevel — the angled surface that tapers to the cutting edge. The grind geometry (flat, hollow, convex) has a huge impact on how the knife cuts and how easy it is to sharpen. A well-ground bevel is the foundation of a great edge.
4. Heat treatment
Raw steel is too soft to hold an edge. Heat treatment — hardening and tempering — transforms it. The blade is heated to a precise temperature, then quenched rapidly in oil or water to lock in hardness. It's then tempered (reheated at a lower temperature) to reduce brittleness. Get this step wrong and the blade can warp, crack, or fail to hold an edge.
5. Finishing the blade
After heat treatment, the blade is ground, sanded, and polished to its final finish. This removes scale and oxidation from the heat treatment process and brings the steel to its final surface — whether that's a mirror polish, a satin finish, or a rustic hand-rubbed look.
6. Handle making
The handle transforms a blade into a knife. At Medeiros, we use exotic hardwoods and natural materials — each handle is shaped, fitted, and finished by hand. The handle is attached to the tang (the steel that extends into the handle) using pins, epoxy, or both, creating a bond that will last a lifetime.
7. Sharpening
The final step is putting a working edge on the blade. Using progressively finer abrasives — from coarse stones to leather strops — the edge is refined until it can shave hair or slice paper cleanly. A properly sharpened Medeiros knife is ready to work from day one.
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