Filament cutter (only 18mm snap off blade needed)

Compact Filament Cutter for 1.75 mm

Update – v2 (2025-05-14):

• No support needed any more
• Added end stop to prevent the slider from falling out when tilted

A simple yet effective filament cutter designed for 1.75 mm filament. The filament is cut at an angle by sliding a blade forward through a guided slot.
 

Highlights:

• Fully 3D-printable – no supports, springs, screws, or nuts required
• Uses a single 18 mm segment of a standard snap-off utility knife blade
• Compact, reliable, and easy to assemble
• Prints fast and works great

Designed from scratch for practical use – quick to print, easy to use, and ideal for any workspace.

Notes:

• Print with a layer height of 0.2 mm or less. At 0.28 mm, the slider may not function properly.
• The smoothness of the sliding action depends on your print quality and printer tuning.
• Preferably use PLA, it will be a slightly more precise fit than with e.g. PETG.

A short video:
https://youtu.be/8BqCJIh7eeQ