ChatGPT says the following, hope that helps:
🔍 1. check basic causes
✏️ a) Pencil slips or is not gripped at all
→ This is usually due to the clamping mechanism:
Gripper arms (clamping jaws) dirty or sticky due to graphite dust or wood abrasion.
🔧 Solution:
Pull off the crank and carefully pull out the clamping jaws (works without tools).
Clean with a fine brush or cotton bud.
Apply some silicone spray or graphite spray (not oil!) to the moving parts.
⚙️ b) Crank turns, but nothing happens
→ Then the milling mechanism is blocked or worn.
Check whether the milling head rotates freely when no pencil is inserted.
If it is stiff:
🔧 Solution:
Hold device upside down and carefully blow out or clean with compressed air spray.
If you see pieces of wood or pencil stuck in the cutter, carefully remove them with a toothpick or tweezers.
Then apply a drop of silicone spray to the axle and crank through empty several times.
🧩 c) Pencil is sharpened on one side or irregularly
→ Then the milling cutter block is displaced or worn.
This happens if the machine has been dropped or if very hard pencils (e.g. 8B or H) have been pressed hard.
🔧 Solution:
Remove the milling head (usually with two small screws on the side).
Check whether the sprocket is worn or displaced.
If heavily worn → Insert a replacement cutter (Caran d'Ache spare part available from specialist dealers or directly from the manufacturer).
🪶 d) Chips jam or do not come out
→ Often a piece of shavings simply jams the ejector.
Empty the container and clean the opening with a small brush.
Lightly tap or blow out the appliance - do not use force.
🧽 2. cleaning & maintenance (recommended every few months)
Empty the chip container.
Clean the milling cutter with a brush.
Apply a drop of silicone spray to moving parts.
Sharpen a few old pencils to distribute the grease evenly.
🧰 3. if it still does not work
Caran d'Ache offers repair services for mechanical models - especially for the metal models (they are considered "repairable for life").
Understandable reaction, but no, it’s not a joke.
The Caran d’Ache is a collector-grade, precision metal sharpener built to last decades, not a basic office model.
In principle, this should work if you have the right sanding machine.
I would ask Caran d'Ache if they know any sanding partners or if they have replacement drums. Good luck
The sharpening machine will be delivered with the new logo, which corresponds to the second product image. We will adapt the product images as soon as possible.
Yes, you can. Please google for the exact product and the "clamp". You will find, for example, a company Orfex . . .
Have fun with the extraordinarily long-lasting top product.
There is an adjusting screw on the crank. Turn it clockwise until it stops. After that, the tip of the pin should be short and blunt... if not, maybe the lead of the pencils is too soft/crumbly - or something is wrong with the "machine...
I am very happy with it :)