KAI whetstone – grit 1000/4000

Genuine Japanese kitchen knives are made from various types of hard, high-quality steel and represent the finest in Japanese knife craftsmanship. 

To maintain the sharpness of the knife and ensure a long service life, it is important to adhere to the following guidelines:

• Never wash the knives in a dishwasher. Instead, clean the knife by hand with lukewarm water and dry it thoroughly immediately – never let it air dry.
• The knives must not be used for hard items such as frozen foods, bones, cartilage, cartilage or hard cheeses.
• Only use the knives on wooden or plastic cutting boards. Avoid cutting surfaces made of glass, stone or metal.
• Store the knife on a magnetic knife holder or in a knife rail. Avoid loose drawers where the blade can be damaged.
• Sharpen the knife regularly with a wet whetstone or have it sharpened professionally.
• Avoid using knife sharpeners with steel or ceramic wheels as they can damage the hard steel.
• Keep the blade dry and clean – for longer storage, a thin layer of oil (e.g. camellia oil) can protect the steel from rust.

Japanese knives are made of thin, hard steel, which gives them extreme sharpness. However, this hardness makes them more vulnerable to chipping (small nicks in the edge) if used incorrectly. This is not a defect – but a characteristic of the fine material.

Personal Customer Service

Our customer service is not a call centre or an AI chatbot. It is Kari or Torben.

When you contact us, you receive a personal reply from someone who knows the products and can advise on dimensions, materials, magnet strength, delivery, care and custom orders. If we cannot answer immediately, we normally reply within a few hours on business days.

Email: info@rune-jakobsen.dk
Kari: +45 42 43 23 76
Torben: +45 42 43 43 93

Terms and Conditions

These terms apply to purchases from Rune-Jakobsen Design ApS. Contact us before ordering if you need clarification about a product, custom dimensions, delivery or returns.

Prices and payment

Prices are shown in the currency and tax setup applicable to your market. We use fixed, fair prices and do not run seasonal sales or Black Friday campaigns. Standing quantity benefits are applied automatically where stated on the website.

Orders and handmade products

An order is confirmed when you receive our order confirmation. Many Rune-Jakobsen Woodworks products are handmade to order. Current production and delivery times are shown on the product page. Natural variations in colour, grain and structure are part of solid wood and handmade materials.

Delivery, VAT and duties

We ship worldwide from Denmark. Shipping options and prices are calculated at checkout. Orders to the USA are shipped DDP, with duties and tariffs charged at checkout. For UK orders, UK VAT is added at checkout. Other international orders may be subject to local taxes or import charges unless checkout states that delivery is DDP.

30-day right of withdrawal

You may withdraw from your purchase within 30 days of receiving it. This applies to standard and custom-made products. Returned items must be unused, undamaged and securely packed. We refund the full purchase price after receiving and checking the return. Return shipping is paid by the customer unless the return concerns an accepted defect or incorrect delivery.

Complaints

Please contact us promptly if an item is damaged, defective or incorrect. Include your order number and photographs where relevant, so we can resolve the matter as efficiently as possible.

Contact

Email: info@rune-jakobsen.dk. We normally reply within a few hours on business days.

Delivery and Shipping

Worldwide shipping

We ship from Denmark to customers worldwide. Available carriers, delivery methods and the final shipping price are shown at checkout and depend on destination, parcel size and weight.

Dispatch and production times

In-stock products are normally dispatched within 1–2 business days. Many Rune-Jakobsen Woodworks products are handmade to order; the current production time is shown on each product page.

VAT, duties and import charges

Orders within the EU are shipped without import duties. Orders to the USA are shipped DDP, so duties and tariffs are calculated and paid at checkout. For UK orders, UK VAT is added at checkout. For other non-EU destinations, local taxes or import fees may apply unless checkout specifies DDP delivery.

Tracking and delivery

You will receive tracking information when the order has been dispatched. Please contact us if tracking does not update, a parcel arrives damaged or the carrier requests charges that were already paid at checkout.

Questions about delivery: info@rune-jakobsen.dk.

30-Day Right of Withdrawal

You may notify us that you wish to withdraw from your purchase within 30 days of receiving the order. The right of withdrawal applies to all products, including products made in custom dimensions.

Returning an item

Contact us before returning the order. Items must be unused, undamaged and packed securely for transport. You may choose the return carrier, and return shipping is paid by the customer unless the return concerns an accepted defect or incorrect delivery.

Refund

We refund the full purchase price after the returned item has been received and checked. The refund is made to the original payment method.

Complaints and damage

If a product is damaged, defective or incorrect, contact us as soon as possible and include your order number and photographs. We will assess the case and arrange the appropriate solution.

Email: info@rune-jakobsen.dk.

Real Products, Honest Images

For us, craftsmanship, materials and aesthetics take centre stage. Our product photos should give you an honest and inspiring impression of what you're getting – without unnecessary staging.

The vast majority of product photos in our webshop are therefore taken by us – whether it's a mill, a knife holder, a serving board or one of our textiles. The images of our wooden products always show real, handcrafted pieces, photographed before they are packed and shipped to their new owners.

To help you imagine how the products look in different homes and kitchens, we sometimes place these original photographs into AI-generated interiors or backgrounds. Only the background is artificial – the product itself is never altered or AI-generated. Every grain, edge, colour and detail you see belongs to the physical piece we made.

From time to time, we also receive photos from happy customers who kindly allow us to use them in the webshop. These images offer an honest and inspiring glimpse of how our products look in real homes and surroundings.

No artificial product renders. No misleading visual enhancements. Just real craftsmanship, photographed honestly.

Reference images when choosing a variant

We are constantly expanding our product gallery. As many of our products come in a wide range of sizes and variants, we don't yet have photos of them all. The image shown for your selection therefore primarily illustrates the chosen wood type – not necessarily the specific size or design variation.

Every piece of wood is unique

Wood is a living, natural material, and our passion is creating unique products with character. Grain patterns and colour tones will therefore naturally vary from piece to piece. Please consider our images as guiding inspiration and an indication of the quality we deliver.

In doubt? We're happy to help.

Questions about design, size, wood type or special requests? Don't hesitate to contact us at info@rune-jakobsen.dk so we can guide you to the right choice before you order.

Customs, VAT and Duties

All orders are dispatched from Denmark. The way VAT, duties and import charges are handled depends on the delivery country.

European Union

Prices include the applicable VAT. There are no customs duties on deliveries within the EU.

United Kingdom

Prices are shown excluding UK VAT, which is added at checkout. Any duties handled through a DDP service are also shown and paid before dispatch.

United States

Orders are shipped DDP. Duties, tariffs and import charges are calculated and paid at checkout.

Other destinations

Checkout shows the tax and duty setup available for your destination. Where DDP is not offered, local taxes, duties or carrier fees may be charged on import.

Contact info@rune-jakobsen.dk if a carrier requests a charge that was already paid at checkout.