KUM Automatic | AS3

Precision sharpeners for technicians, engineers, architects, artists – for anyone who needs a long, precise pencil nib. The separate sharpening of the wood and lead guarantees a perfect sharpening result. The automatic stop avoids unnecessary waste. Two spare blades are also integrated in the container.

Und so funktioniert’s:

Sharpening is carried out in two phases:
1st phase – only the wood of the pen is sharpened until the lead touches the automatic stop. Further sharpening is not possible. The free mine is now the correct length for phase 2.
2nd phase – the lead is now precisely shaped. The automatic stop prevents additional spikes when the final result is reached.

The result is a cone shape based on 9 degrees.