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Liner Lock Pocket Knife Ornament

3D model description


I originally designed this as a toy, and now I'm sure it would look great hanging on a Christmas tree. It could even be used to open gifts (if you print the serrated version).

The goal of this project was to create a pocket knife that was able to be 3d printed that utilized a liner lock. Neat proof of concept, no?

Knife blade is a drop point. Thumb stud is included on the blade. Cutting surface is roughly 2.7" long. The knfie can easily be opened with one hand and close with one as well. To unlock liner lock, simply push to the side with thumb, just like on a real knife with a liner lock!

I have printed this and it works fine. Lockup is solid. Changes in future versions include a lanyard clip as well as different blade profiles (tanto, clip point, straight back).

Knife pictured is a version before this release and lacks an extra washer, and some refinement. Regardless, your knife should print fine.

Parts List

  • Blade
  • Front Scale
  • Back Scale
  • Washer
  • Front Pin
  • Liner

Read assembly instructions for more details.


Use only for discussion piece or as ornament on a Christmas Tree. I am not responsible for use as a weapon or any other malicious action.

Change List

v1: Initial release


- Rear pin added, it is no longer integrated into the back scale

- Blade now has washer built in

- Small liner tweak


- Added ornament hook for Christmas Tree

3D printing settings


Print all parts at 100% infil. All parts do not require support, except the liner. Print the liner with external support and a raft!


  • Place back scale on flat surface
  • Place liner lock onto back scale
  • Place blade into place on front hole
  • Place washer onto blade
  • Push front pin through front scale
  • Lay front scale on back scale, liner, blade and washer, and push both front and back pins through
  • Glue front pin to both front scale and rear scale
  • Glue back pin to front scale
  • Attach hook through scale look at rear of knife
  • Hang!
  • 3D file format: STL





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