STL Mesh Repair for Large Files
Cloud3 free/dayServer-side repair of large STL/OBJ/PLY/GLB meshes: fill holes, fix normals, remove degenerates, convert formats; before/after report. Sign-in and cloud quota.
Local preview (before upload)
Pick a mesh file below — it is parsed locally in your browser for this preview before anything is uploaded. Click the cloud button only when the model looks right.
Drag files here, or click to browse
Supports STL, OBJ, PLY, GLB
Choose fileSign-in required; cloud tasks draw from your cloud credits by weight (see pricing for free/Pro rules).
After submission this page polls the job every 2 seconds for up to about 11 minutes; if it times out, please resubmit (the server allows up to 10 minutes per job).
What is it? STL Mesh Repair for Large Files repairs meshes on the server (fills holes, fixes normals, removes degenerates) and converts formats, which suits large models that are too big for the browser. After the job completes, the page shows a repair report: vertices/faces before → after, watertight and winding consistency, and change counts.
TL;DR: Upload large STL/OBJ/PLY/GLB meshes to the Vecaria cloud for repair — vertex welding, hole filling, normal fixes and degenerate removal — plus format conversion, with a before/after repair report on the page. Requires sign-in and cloud quota; server jobs run up to ~10 minutes.
How to use
- Sign in and pick the model — it is previewed locally on the page before anything is uploaded.
- Choose the output format (STL, PLY, OBJ or GLB).
- Click the cloud button to upload and repair, then download the result — the page also shows a repair report (before/after stats and what changed).
FAQ
Why server-side?
Large meshes can exceed browser memory; server processing handles them reliably.
When are files deleted?
Cloud files follow the configured retention window and can be deleted on demand.
Will I see what was repaired?
Yes — after the job completes, the page shows a repair report: vertices/faces before → after, watertight/winding consistency, and change counts (merged or removed vertices, degenerate faces removed, holes filled). Server builds without reporting simply omit the section.
How is this different from Mesh Doctor?
Mesh Doctor runs entirely in your browser — no sign-in, no upload, no quota — and repairs by welding vertices, removing degenerates and unifying normals, but it does not fill real holes. Server Mesh Repair runs in the Vecaria cloud (sign-in, cloud quota, jobs up to ~10 minutes), fills real holes, fixes normals and winding, and converts between STL, PLY, OBJ and GLB — suited to models too large or too damaged for the browser. Check locally with Mesh Doctor; come here when actual hole filling or large-file processing is what you need.
How large can my model be?
Per-file upload caps follow your plan and tool tier — the anonymous cap is shown above the upload control, and sign-in raises it (Pro: 100 MB per file). If a file exceeds the cap the upload is rejected with a clear message, so you know immediately rather than after a job.
Do I have to pay?
The Free plan includes cloud credits per calendar month (10), which covers a few repair jobs; Pro ($15/mo) includes 500 and raises the per-file cap. Cloud jobs always require sign-in because they consume quota — unlike the free, no-sign-in local mesh tools.
Can it convert my mesh to another format at the same time?
Yes — the only option on the page is the output format: pick STL, PLY, OBJ or GLB and the repaired model downloads in that format, so repair and conversion happen in one job.
Why does the page preview my model locally before uploading?
The selected file renders on the page in 3D before anything is uploaded — you confirm the model is the right one first; the file only leaves your device when you click the cloud processing button. After the job, cloud files are cleaned up automatically per the retention policy.
Examples
- Upload an STL → server-side repair → read the report → download STL/PLY/OBJ/GLB
Supported formats
Limitations
- Requires an account and uses cloud quota.
- Per-file upload caps follow your plan/tool tier (the anonymous cap is shown above the upload control).
- Server processing runs up to ~10 minutes; the page polls for ~11 minutes and then stops tracking — resubmit if that happens (there is no jobs list page).
- Repair is powered by trimesh (MIT): weld vertices, remove degenerates, fill holes, fix normals. Hole counts are derived from boundary-loop changes (Euler characteristic); complex holes may only be partially filled.
- Upload is required for this tool (unlike the local mesh tools).
Privacy
This tool has no local processing path: your file is uploaded over an encrypted connection to our own VPS, used only for this job, stored for 1 days by default and auto-deleted — or delete it earlier at any time.