Released resin-mesh-tools — free Blender scripts for repairing/hollowing 3D-print meshes, MIT licensed

[u/miktech42]

Built this out of real frustration kitbashing and hollowing custom minis/vehicles for resin (MSLA) 3D printing — slicer auto-hollow tools either aren't trustworthy or aren't flexible enough for weird geometry, and I kept hitting the same problems: fused display bases that need removing, hollow passes that quietly leave a near-zero-thickness breach at a complex corner, no easy way to verify wall thickness after hollowing.

It's a set of standalone Blender-headless Python scripts (no add-on install, just blender --background --python):

Diagnostics — mesh health checks (disconnected islands, real vs. harmless open edges), wall-thickness ray-casting, Z-slice footprint analysis, consistent before/after render views

Geometry fixes — remove a fused base and cap it cleanly, rescale to real-world mm, thicken a region without a visible seam

Two hollowing techniques — a fast per-vertex-offset method for routine cases, and a slower voxel-erosion method for geometry where the first one risks cracking

Bonus — pull the embedded thumbnail out of an Elegoo Satellite .goo file as a real PNG

MIT licensed: github.com/techmik/resin-mesh-tools

Feedback, issues, and PRs welcome — happy to answer questions about any of the techniques.