V for Vendetta / Guy Fawkes Mask (Printable)

Introduction

I really liked this mask, but couldn't get it to slice in prusa slicer 2.9.6. I tried some manual repairs in Blender with mixed results, and eventually used Gemini 4 Argon in Antigravity to write the blender script carrying out the repairs. The stl is scaled up from the original and oriented for printing. I also included the repaired mesh as this is the best place to start if you're scaling it (see below). The zip file in "other files" has the blender scenes and scripts.

If you're morally opposed to AI, I included the closest I came manually in Blender. It is at the original scale and orientation. I used Extrude Faces Along Normals; solidfy modifier created a lot of artifacts.

Option A: Rescaling interactively in Blender

Because GuyFawkesMask_repaired_shell.blend keeps the 2.4 mm wall in a live modifier stack on top of the open shell, rescaling while preserving the exact 2.4 mm thickness takes only two steps:

1. Open GuyFawkesMask_repaired_shell.blend in Blender and select GuyFawkesMask_RepairedShell.

2. Scale the object in Object Mode (press S, or enter new dimensions in the sidebar (N -> Item -> Dimensions)).

   • Note: While scaling in Object Mode before applying scale, Blender scales the modifier output by the object's scale vector.

3. Press Ctrl + A -> Apply -> Scale (or menu Object -> Apply -> Scale).

   • As soon as you apply the scale (Scale = 1.0, 1.0, 1.0), the Solidify_Inward_2.4mm modifier recalculates the wall offset in world millimeters, restoring the exact 2.4 mm thickness at the new size!

How the Live Modifier Stack Works (If Creating From GuyFawkesMask_repaired_shell.stl)

If you import GuyFawkesMask_repaired_shell.stl into a fresh Blender scene:

1. Scale First & Apply Scale: Scale the shell to your desired outer dimensions and press Ctrl + A -> Scale.

2. Create a Vertex Group for the Inner Wall:

   • In Object Data Properties (green triangle icon) -> Vertex Groups, click + and name the group Inner_Shell (leave it empty in Edit Mode; the Solidify modifier will populate it automatically).

3. Add a Solidify Modifier:

   • Mode: Simple

   • Thickness: 2.4 mm

   • Offset: -1.0 (thickens inward toward +Y, leaving the sculpted front face untouched)

   • Even Thickness: Unchecked (prevents miter spikes on sharp corners)

   • Fill Rim: Checked

   • Vertex Groups -> Shell: Select Inner_Shell

4. Add a Corrective Smooth Modifier (below Solidify):

   • Factor: 0.5

   • Repeat: 20

   • Smooth Type: Simple

   • Vertex Group: Inner_Shell (smooths only the inner wall where concave valleys pinch together, leaving the outer sculpted face 100% untouched)

   • Only Smooth: Checked

   • Pin Boundaries: Checked

---

Option B: Rescaling using a Blender python script

For the cleanest possible mesh (guaranteed 0 self-intersecting faces via BVHTree relaxation and an automatically flattened forehead rim at Z = 0 for upside-down printing):

Open solidify_guy_fawkes_mask.py in any text editor and edit scale_xyz, wall_thickness, or upside_down_tilt_deg at the bottom of the file:

build_guy_fawkes_mask(
...
scale_xyz=(2.11, 1.90, 1.82),  # (X width, Y depth, Z height) multipliers

wall_thickness=2.4,            # Inward wall thickness in mm

upside_down_tilt_deg=8.0,      # 8 deg backward tilt from 180 deg upside-down

flatten_forehead_bed_rim=True, # Builds flat Z=0 horseshoe base on forehead rim

)

Run the script in PowerShell:

& "C:\Program Files\Blender Foundation\Blender 5.2\blender.exe" -b -P solidify_guy_fawkes_mask.py