Quick answer: Meshy includes two built-in tools for 3D print prep. Analyze Printability (free) scans your model for mesh issues including non-manifold edges, holes, and degenerate faces. Repair Printability (10 credits) automatically fixes those issues. Both are accessible from the Print menu in your Meshy workspace.
Why printability matters
In Meshy, Analyze Printability is a free tool that checks whether a 3D model's geometry is structurally sound for FDM printing. Common mesh issues — non-manifold edges, holes in the surface, or invalid faces — can cause slicers to reject the model or produce failed prints. Running an analysis before exporting saves time and material.
How to analyze your model's printability
Open your model in the Meshy workspace.
With the model selected, click the Print icon in the toolbar.
Select Analyze Printability.
Meshy checks for the following issues:
Watertightness — whether the mesh surface is fully closed
Non-manifold edges — edges shared by more than two faces
Holes (boundary loops) — open gaps in the mesh surface
Degenerate faces — zero-area or structurally invalid polygons
Review the results. Each issue is reported as Healthy, Warning, or Error.
Analyze Printability does not use any credits.
How to repair your model
If Analyze Printability returns errors or warnings, use Repair Printability to fix them automatically.
From the Analyze Printability results, click Repair Printability.
Confirm the repair. The process uses 10 credits and runs in the background.
When the repair task finishes, download the repaired model from your generation history. The output format matches the input (STL in → STL out; GLB in → GLB out).
Note: Repair removes existing textures because changes to mesh geometry invalidate UV maps. To restore textures on the repaired model, use AI Texturing after the repair is complete.
FAQ
1. What file formats does Repair Printability accept?
Repair Printability accepts GLB, STL, and OBJ files up to 100 MB. The repaired file is returned in the same format as the input. If your model is in a different format, use Meshy's Convert tool first to convert it to a supported format.
2. My model passed Analyze but still failed in my slicer. Why?
Analyze Printability checks for mesh topology issues only. It does not evaluate printability constraints like steep overhangs, thin walls, or model scale. For those, use your slicer's built-in analysis features — Bambu Studio, Ultimaker Cura, and OrcaSlicer all include support preview and mesh-check tools.
3. Are credits refunded if Repair Printability fails?
Yes. The 10 credits for Repair Printability are only charged on a successful result. If the task fails for any reason, the credits are automatically returned to your account.
4. Can I repair a model I uploaded rather than one generated by Meshy?
Yes. Repair Printability accepts any GLB, STL, or OBJ file up to 100 MB, regardless of where the model was created. Upload the file directly to Meshy and run the repair from there.
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