Dulotec Double-Sided Folding Diamond Sharpener 240 / 400

Dulotec Double-Sided Folding Diamond Sharpener 240 / 400 – a compact tool for repairing and sharpening edges

The Dulotec double-sided folding diamond sharpener 240 / 400 is a compact tool designed for quickly restoring and shaping cutting edges. Two working surfaces with grits of 240# and 400# allow you to progress from intensive processing of a severely dulled or damaged blade to more precise edge alignment.

The foldable design facilitates transport and storage, and when folded, the diamond surfaces are protected by the Handle components. The sharpener can be used both dry and with water, without the need for oil.

240# grit for intensive material removal

The side with a grit size of 240# / 62 μm is designed for use with severely dulled or damaged blades. The coarse diamond coating allows for rapid material removal, restores the edge geometry, and prepares the blade for the next stage of sharpening.

400# grit for further edge shaping

The 400# / 35 μm surface is used to smooth out marks left by the 240# grit and further shape the cutting edge. This is a practical intermediate step before using finer sharpeners designed for final finishing and polishing.

Foldable design and dry or wet use

When unfolded, the sharpener reaches a length of 225 mm, providing convenient access to a working surface measuring 100 × 20 × 5 mm. When folded, it measures 125 × 30 × 15 mm, making it easy to fit in a bag, backpack, or knife maintenance kit. The diamond surfaces can be used dry or with a small amount of water.

Key Features at a Glance

• 240# / 62 μm — very coarse surface for intensive material removal.
• 400# / 35 μm — coarse surface for further edge shaping.
• Double-sided design — two grits in one tool.
• Foldable design — easy transport and protection of work surfaces.
• Diamond — diamond abrasive.
• Dry or wet — flexible usage.
• Oil-free — no need for sharpening oil.
• 66.00 g — low weight for portable use.

Technical Data

Frequently Asked Questions

What is the difference between 240# and 400# grit?

The 240# grit is significantly more aggressive and is used for quickly removing material, repairing a damaged edge, and preliminary shaping of the blade. The 400# grit works more gently and allows you to smooth the edge after using the 240# side.

When should you use the 240# side, and when should you use the 400# side?

The 240# side is best for very dull or damaged blades. Once the proper geometry has been restored, switch to the 400# side to even out the edge and prepare it for further sharpening with a finer grit.

Can the Dulotec 240 / 400 sharpeners be used with water?

Yes. The sharpener can be used both dry and with water. It does not require sharpening oil.

How do you properly sharpen a knife on a diamond sharpener?

Guide the blade across the working surface at as constant an angle as possible, applying light and controlled pressure. If the edge is very dull, it’s best to start with the 240# grit and then move on to 400#.

How do you clean and store the sharpener?

After use, the diamond surface can be cleaned of metal residue and thoroughly dried. Before folding it up, make sure the working surfaces are clean and dry. The folded design protects them during transport and storage.

Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools