Broken STL from the internet, an AI-generated model full of holes, a triangulated CAD export you want to remix: the Print Repair Kit has the six Sonneblom tools we use to get any mesh from 'will not slice' to 'prints first time'.

What's included (6 add-ons)

• Print Fix - Mesh Repair for 3D Printing ($15 on its own): one-click repair of holes, flipped normals and non-manifold edges
• AI Mesh Fixer ($14 on its own): cleans AI-generated / image-to-3D meshes (triangle soup, floaters, holes) into a watertight mesh
• STL CAD Cleaner ($12 on its own): rebuilds clean flat faces and sharp edges from triangulated CAD STL files so you can remix them
• Printability Check - Will It Slice? ($1 on its own): shows exactly what will make a model fail in the slicer, before you print
• Loose Bits Cleaner ($1 on its own): finds and removes floating fragments and tiny loose parts
• Wall Thickness Checker ($12 on its own): colours walls that are too thin for your nozzle or resin printer

Bought separately: $55. In this bundle: $32 (you save about 42%).

Who it's for

Anyone who downloads, scans, generates (AI / image-to-3D) or remixes models for FDM or resin printing.

How the tools work together

1) Printability Check shows what is wrong. 2) Print Fix (or AI Mesh Fixer for AI/scan meshes) repairs it; STL CAD Cleaner rebuilds clean faces on CAD STLs. 3) Loose Bits Cleaner removes floaters. 4) Wall Thickness Checker confirms the walls are thick enough for your nozzle.

How to install

You get each add-on as its own Blender extension .zip (one download per add-on, never a zip inside a zip). In Blender: Edit > Preferences > Get Extensions > the arrow menu (top right) > Install from Disk, pick the .zip, and it is enabled. Repeat for each add-on you want. Every add-on has its own tab in the 3D Viewport side panel (N).

Compatibility

Blender 4.2 - 5.2 LTS (every add-on tested on Blender 4.2.9 LTS and 5.2.2 LTS). Windows, macOS and Linux. Updated Nov 2026.

Good to know

• These are the same add-ons as the single products, with the same updates: when a single add-on gets a new version, the bundle gets it too.
• Already own the $139 3D Print Suite bundle? It includes five of these six (all except STL CAD Cleaner), so you only need STL CAD Cleaner on its own.
• Works in real millimetres.

Support

Message us through Superhive. We answer within a day and we fix real bugs fast (recent updates came straight from buyer feedback).