Free 3D Models — LeanGoatLab
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3D-Printable Rugged Storage

Open-source STL files designed in-house. Print your own protective cases for vials, pens, and supplies — built to travel, drop, and last.

The Lineup

Pick your case

Three rugged box designs covering pens and standard 3 mL vials. All files print without supports on most FDM machines.

STL · STEP EZpen Rugged Box - 3D model showing pen case with latch closures

EZpen Rugged Box

Filament PETG box + TPU insert
Hardware 6× M3×30 screws
Infill 15% Gyroid
Supports None
Print Time ~4 hours
Download STL
STL · STEP 10 Vial Rugged Box - 3D model showing ten vial slots in elongated rugged case

10 Vial Rugged Box

Filament PETG box + TPU insert
Hardware 6× M3×30 screws
Infill 15% Gyroid
Supports None
Print Time ~2 hours
Download STL
STL · STEP 6 Vial Rugged Box - 3D model showing six round vial slots in white insert

6 Vial Rugged Box

Filament PETG box + TPU insert
Hardware 3× M3×30 screws
Infill 15% Gyroid
Supports None
Print Time ~1 hour
Download STL