User Manual

Product information
Erasers - Sharpeners
2.2 Rotary sharpener
 2002 STAEDTLER MARS GmbH & Co. Page 12 of 13
version 07. 2002 subject to change
Illustration 14: Rotary sharpener 501 20
Nowadays, rotary sharpeners operate according to the
milling principle. This involves a multiple milling cutter being
rotated around the pencil at a fixed angle.
The length of the point can be set as required. Once the set
length has been reached, the machine runs free so that the
pencil does not get shortened unnecessarily.
We recommend that you do not sharpen with wax pencils
the rotary sharpener as the sharpening angle is not suitable
for that kind of lead. The cutter would be not be able to
cope effectively with the soft lead and would have to be
cleaned.
Illustration 15: Use - steps 1+2
Step 1:
Open the pencil clamp mechanism by pressing together.
Step 2:
Insert the pencil into the opening.
Illustration 16: Use - steps 3+4
Step 3:
Push the clamping panel forwards.
Step 4:
Clamp the pencil.
Illustration 17: Use - step 5
Step 5:
Sharpen until the level of resistance significantly lessens.
Release the clamp and remove the sharpened pencil.