How to Store Knives in a 15-Slot Walnut Knife Block
By WÜSTHOF - Official Online Store | Published: 2026-10-31
Category: Tips & Care
A step-by-step guide to loading, cleaning, and oiling a 15-slot walnut knife block so knives stay sharp, the wood stays sound, and the counter stays safe.
Quick answer
Load your 15-slot walnut block by size and use, wash and dry knives before they go in, and oil the wood lightly a few times a year. Keep the block away from the sink and stovetop, and never put a wet knife into a slot.
Why slot size matters more than slot count
A 15-slot block is not 15 identical holes. The WÜSTHOF 15-Slot Walnut Knife Block assigns specific widths: a 2.25-inch slot for a large chef’s knife, two 2-inch slots for chef and Asian-style knives, three 1.5-inch slots for large bread and task knives, seven 1-inch slots for steak and paring knives, plus dedicated spaces for kitchen shears and a honing steel. Matching each knife to the correct width keeps the blade from wobbling or wedging.
If a knife does not slide in easily, do not force it. A slot that is too wide lets the edge rest against wood; one that is too narrow can chip it. Use the narrow slots for small knives and leave the wide slots for the blades they were cut for.
Where to put the block so the wood lasts
Walnut is a hardwood, but it still reacts to moisture and heat. Keep the block on a dry counter away from the sink, dishwasher, and stovetop. Steam and splashes raise the grain and can lead to cracks over time, while direct heat dries the wood unevenly.
A spot with some air movement is better than a closed cabinet. If you keep the block near a window, watch for direct sun, which can fade the finish.
The one habit that protects both knives and wood
Never put a wet or damp knife into the block. Moisture trapped in a slot darkens the wood, encourages swelling, and can rust a carbon steel blade. Wash each knife by hand, dry it fully with a towel, and let it air for a minute before it goes back.
The same rule applies after honing: wipe the steel and the blade before storage so abrasive particles do not sit in the slot.
Step-by-step: load, clean, and oil your walnut block
- Assign knives to slots by width: Lay all your knives on the counter and match each blade to a slot: large chef’s knife in the 2.25-inch slot, chef and Asian-style knives in the 2-inch slots, bread and task knives in the 1.5-inch slots, and steak and paring knives in the 1-inch slots. Put shears and honing steel in their dedicated spaces. If a knife rocks or drops loosely into a slot, move it to a narrower one before you store it.
- Wash and dry every knife before it goes in: Hand-wash each knife with mild soap, rinse, and dry it completely with a soft towel. Pay attention to the bolster and handle junction, where water can hide. Never leave a knife to air-dry in the block. A single damp blade can swell the slot and dull the edge against damp wood.
- Insert blades edge-up or edge-down as the slot allows: Slide the knife in gently until it seats. Do not drop it or let the edge scrape the slot opening. If the block holds the blade vertically, keep the edge facing away from the wood surface it could contact. If you feel resistance halfway in, stop and check for a misaligned knife or debris in the slot.
- Clean the block monthly without soaking it: Wipe the exterior with a slightly damp cloth and mild soap, then dry immediately. For slots, use a soft brush or a folded cloth to lift crumbs and dust. Do not submerge the block or run it through the dishwasher. Never pour water into a slot; trapped moisture is the main cause of swollen, cracked wood.
- Oil the walnut two to four times a year: Apply a thin coat of food-safe mineral oil or a dedicated wooden-block conditioner with a lint-free cloth. Let it sit for 15–20 minutes, then buff off the excess. Oil when the wood looks dry or light-colored, not on a fixed calendar. Skip oiling if the block feels tacky; excess oil attracts dust and can turn rancid.
- Check for wear and adjust storage: Every few months, look for loose slots, cracks, or dark damp patches. If a slot has widened, move that knife to a snugger slot or store it elsewhere. Keep the block out of direct sun and away from steam. A cracked slot can catch and chip an edge, so retire the block if damage reaches the blade area.
Product facts
- 15-Slot Walnut Knife Block: The WÜSTHOF 15-Slot Walnut Knife Block has 15 slots, including dedicated spaces for kitchen shears and a honing steel. You can keep the tools you use most in one place instead of hunting through drawers, but each tool still needs its own assigned slot.
15-Slot Walnut Knife Block
