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Protogen 3D Prints

The Protogen-3D-Prints repository contains free, 3D-printable STL files for various Protogen head designs.

The latest design, built-in cooling, printable in TPU, lightweight, and easy to print. Recommended for all new builds.

The third design release, very hard to print, difficult visor to cut, but all based on visuals.

The second released build, reasonable to print, a bit of a challenge to build.

The first released Protogen build - runs a bit small.

A compact design optimized for smaller print beds.

An adapter piece for mounting WS35 LED panels in BoxCat-style heads.


  1. Clone or download the repository:

    Terminal window
    git clone https://github.com/coelacant1/Protogen-3D-Prints.git
  2. Navigate to your chosen Protogen variant folder

  3. Import the STL files into your slicer (Cura, PrusaSlicer, etc.)

  4. Configure print settings and slice

  5. Print and assemble!


Most designs require supports - except for the Sigma

  • Recommended: 0.2mm or finer for smooth curves
  • Acceptable: 0.3mm for faster prints with visible layer lines
Use CaseInfill %
Light wear15-20%
Regular wear20-25%
Heavy use25%+
DesignRecommended Material
Beta, Delta, EpsilonPETG
SigmaTPU (flexible) or PETG

Each design folder contains:

  • Split STL files sized for common print beds
  • BOM for each build
  • License information

For those who want to modify or customize the designs, STEP files are available for purchase on the Coela Can’t! Gumroad page.

STEP files allow you to:

  • Modify the design in CAD software
  • Create custom variants
  • Adjust dimensions for fit

The STL files are provided for personal, non-commercial use. Check each folder for specific license terms.

For multi-use licensing, you can check out the higher tier available on Gumroad.

View Repository