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  • hobby knife

  • retractable utility knife

  • modeling tool

  • craft knife

  • precision cutter

  • 3d print cleaning tool

  • scalpel holder

  • elegoo

Precision Retractable Hobby Knife (Elegoo Edition)

Continuing the utility knife series, this model brings the convenience of a retractable sliding mechanism to standard hobby knife blades (like the popular #11 scalpel blades)!

Normally, hobby blades are used in static handles, making them tricky to store safely. This fully 3D-printable design allows you to retract the razor-sharp tip directly into the handle when not in use, making it the perfect safe and portable tool for precision craft work, modeling, and cleaning up 3D prints.

This model maintains the sleek, compact aesthetic of the 9mm version and features the iconic ELEGOO branding designed for an effortless two-color print!

🌟 Key Features:

  • Retractable Safety: Unlike standard X-Acto style handles, this knife features a thumb slider to safely retract the hobby blade into the handle for safe storage and transport.
  • Precision Control: The pen-like profile allows for a comfortable grip right near the tip for detailed, delicate cutting and trimming.
  • Custom Blade Carriage: The internal slider is specifically designed to securely grip the slot of standard #11 hobby blades.
  • Elegoo Branding: The embedded "ELEGOO" logo looks incredible with a simple layer color change in your slicer.
  • Pegboard Ready: Includes the signature built-in hook hole at the base, keeping your workbench organized.

🔩 Required Hardware:

  • 1x Standard Hobby Knife / Scalpel Blade (Size #11).
  • 100% 3D printed! No extra hardware required.

🖨️ Printing Instructions:

  • Material: PETG or Tough PLA is recommended. The slider mechanism relies on a bit of flex to lock into place securely.
  • Multicolor Text: To get the highlighted logo effect without an AMS/MMU, add a "Pause at height" (color change) command in your slicer right before the top layers of the text start printing.
  • Infill: 15% (Grid or Honeycomb).
  • Walls/Perimeters: Use at least 3-4 wall loops for strength, especially around the delicate tip of the knife where the blade exits.

Safely store your sharpest blades and clean up your prints with precision! Please share your makes!

Originality of the Model

The author declares that this work is their personally original model

This model is licensed under the following terms:

Credit must be given to the creator

Only noncommercial uses of the work are permitted

Remixes must be shared under the same license

Models(4)

  • model file image
    Elegoo Hobby knife body.stlDesigner

    1.10 MB

    2026-07-02

  • model file image
    Hobby knife.3mfDesigner

    316.11 KB

    2026-07-02

  • model file image
    Key hobby knife.stlDesigner

    105.45 KB

    2026-07-02

  • model file image
    Lock hobby knife.stlDesigner

    16.68 KB

    2026-07-02

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