Graef CC120 Electric Knife Sharpener (White, 45W)

How many times should I pull my knife through each stage?

For very dull knives, use 8 pulls per side in stage one, 4 pulls per side in stage two and 2 pulls per side in stage three. For regular maintenance sharpening, you can skip stage one and use 4 pulls per side in stage two followed by 2 pulls per side in stage three. The key is to maintain consistent pressure and speed whilst pulling the knife through each slot.

Can this sharpener handle expensive Japanese knives safely?

Yes, the CC120 works effectively on Japanese knives including those made from harder steels. The precision angle guides and diamond discs accommodate various steel types and hardness levels. However, start with fewer pulls and test the results, as harder steels may require less aggressive sharpening than European-style knives. The diamond coating is gentle enough for premium blades when used correctly.

What's the difference between this model and the Chef's Choice 120?

The Graef CC120 is essentially identical to the Chef's Choice 120 in terms of functionality and design, but features a different motor that operates more quietly. Both use the same three-stage diamond system with identical sharpening capabilities. The Graef version typically costs less whilst offering the same German engineering quality and performance standards.

How long do the diamond discs last before needing replacement?

The diamond discs are designed for long-term use, but their lifespan depends on usage frequency and knife condition. With regular home use (sharpening 3-4 knives monthly), the discs should last several years. However, Graef only guarantees spare part availability for one year and replacement discs are not commonly available, meaning the unit may need replacing when the discs wear out.

Does this sharpener work on serrated bread knives?

Yes, the CC120 effectively sharpens serrated knives, which is unusual for electric sharpeners. The diamond discs can work between the serrations to restore the cutting edge. Use lighter pressure and fewer pulls compared to straight-edge knives. Start with stage two for serrated blades unless they're extremely dull, as the aggressive stage one may be unnecessary.

What maintenance does the sharpener itself require?

The CC120 requires minimal maintenance beyond keeping it clean and dry. Wipe the exterior with a damp cloth and use a brush to remove metal filings from the sharpening slots after use. Avoid getting water inside the unit and store it in a dry location. The motor is sealed and doesn't require lubrication or other servicing during normal use.

Can I sharpen kitchen scissors with this machine?

No, the CC120 is designed specifically for knives and cannot accommodate scissors or other cutting tools. The angle guides and slot design are optimised for knife blades only. Attempting to sharpen scissors could damage both the tool and the sharpener. Use dedicated scissor sharpeners or professional sharpening services for scissors and other non-knife cutting implements.

How much counter space does this sharpener require?

The CC120 measures 25cm long, 11.2cm wide and 11cm high, making it compact enough for most kitchen counters. You'll need additional space in front of the unit to pull knives through the slots - allow at least 30cm of clear space for comfortable operation. The unit weighs 2.04kg, so it stays stable during use without requiring clamps or additional securing.