CARING FOR YOUR SEMPER SHARP KNIFE

Every Semper Sharp knife is built to be used, carried, and passed down. Because we work with natural materials — mammoth tusk and molar, musk ox horn, meteorite, fossilized walrus ivory, coral, and fine exotic woods like bog oak, koa, and desert ironwood — your knife needs a bit more thought than a mass-produced blade off a store shelf. None of it is complicated. A few minutes of care after each use will keep your knife performing and looking its best for decades.

The Blade‍ ‍

Stainless steel is stain *resistant*, not stainproof.

This is the single most misunderstood thing about knife steel. "Stainless" simply means the steel has enough chromium content to resist corrosion far better than carbon steel — it does not mean the blade is immune to rust, pitting, or discoloration. Left wet, salty, or dirty long enough, any stainless blade can still corrode.

• Wipe it down after every use.

Especially after contact with acidic foods (citrus, tomatoes), salt water, or blood from game and fish — these accelerate corrosion faster than almost anything else.

• Hand wash only.

Never put your knife in the dishwasher or soak it in hot water. The heat, moisture, and harsh detergents will dull the edge, pit the steel, and can damage handle materials.

• Dry it immediately and completely.

Don't let it air dry — towel dry the blade, the pivot (if a folder), and especially the plunge line where the blade meets the handle, where moisture likes to hide.

• Oil the blade periodically

Especially if it won't be used for a while. A light coat of oil is enough — we make our own in-house blend, Semper Shine, specifically for this and it's available on our website. This is especially important if you live somewhere humid or coastal.

• Store it dry.

Avoid leather sheaths for long-term storage if there's any chance of trapped moisture — leather holds humidity against the steel. A dry environment is what matters most.

Keeping the Edge‍

• Strop or hone your edge regularly rather than waiting until it's fully dull — a few passes on a strop takes seconds and keeps the factory edge geometry intact.

• Use a proper sharpening system or stone when it's time for a real sharpening. Cutting boards should be wood or plastic — never glass, stone, or ceramic, which will roll or chip the edge.

• Avoid using your knife for tasks it wasn't built for (prying, batoning unless the knife is designed for it, cutting through bone with a fine edge). This is the fastest way to chip an edge or bend a tip.

The Handle: Natural Materials

This is where Semper Sharp knives differ most from what you'll find elsewhere. Fossils, ivory, horn, and fine woods are alive with character — but they're also organic or semi-organic materials that respond to their environment. Treat them more like fine furniture or jewelry than like a tool handle.

Mammoth tusk, mammoth molar, and fossilized walrus ivory

These materials have been mineralizing in the ground for thousands of years and are more stable than you'd expect, but they can still dry out over time, especially in low-humidity environments. A light application of Semper Shine, our in-house wax and oil blend made specifically for these materials, every few months keeps them from drying, cracking, or losing their luster. Avoid soaking them or leaving them wet for extended periods.

Musk ox horn

Horn is a keratin material, similar to fingernails, and it's sensitive to heat and prolonged moisture. Never leave it in direct sun (on a dashboard, near a window) or near a heat source — it can warp or develop surface cracks. Wipe dry after use and apply a light coat of Semper Shine occasionally to keep it supple.

Meteorite

Meteorite is iron-nickel, and just like your blade, it is not stainless — it's actually more reactive than most knife steel. Bare skin oils and humidity will cause it to oxidize and lose its Widmanstätten pattern if left unprotected. Keep it lightly coated with Semper Shine at all times, wipe it down after handling, and avoid extended moisture exposure altogether. For storage, keep meteorite-handled knives somewhere dry and climate-stable — a damp sheath, basement, or garage is the fastest way to lose the pattern to surface oxidation, even with regular oiling.

Coral

Coral is soft and porous compared to other handle materials. Avoid harsh chemicals, extended water exposure, and impacts. Wipe clean with a soft, dry cloth and keep it away from acidic exposure — the same things that etch coral jewelry will dull its finish.

Fine woods (bog oak, Hawaiian koa, desert ironwood)

Wood handles benefit from an occasional coat of Semper Shine to keep the grain from drying and to preserve the finish. Avoid prolonged water exposure and never store a wet wood handle in a sealed sheath — let it dry fully first. Sudden temperature swings can also cause fine cracking, so avoid leaving your knife in a hot car or near a fire for extended periods. For long-term storage, keep wood-handled knives somewhere with stable humidity — very dry environments (like a heated cabin in winter) can shrink and crack wood over time, while damp storage invites swelling and finish damage.

General Storage Tips

• Store your knife in a dry place with stable humidity and temperature.

• If using a leather sheath, remove the knife for long-term storage rather than leaving it sheathed indefinitely. - Avoid leaving your knife in a damp pack, wet boat bag, or tackle box for days at a time — dry it and store it properly as soon as you're able.

• Wood handles are the most sensitive to environment during storage. Very dry indoor air (like a heated home in an Alaska winter) can shrink and crack fine woods over time, while damp storage causes swelling and finish damage. Aim for stable, moderate humidity, and give the wood a coat of Semper Shine before any extended storage.

• Meteorite handles need dry, climate-stable storage above all else — even brief periods of humidity can cause surface oxidation and dull the pattern. Never store a meteorite-handled knife in a damp sheath, basement, or garage. A light coat of Semper Shine before storage adds a protective barrier.

• A knife that's used and cared for regularly actually stays in better condition than one that sits untouched — regular light use with proper drying keeps oils cycling through the materials.

• Semper Shine, our in-house wax and oil blend, is formulated specifically for these natural materials and is available on our website — it's the easiest way to keep every part of your knife, blade included, protected between uses.

The Bottom Line

Every material in your Semper Sharp knife has a story — some of them literally thousands of years old. A little routine care is a small price for a knife that can last generations. If you're ever unsure how to care for a specific piece, reach out — we built it, and we're happy to help you keep it in the field for the long haul.