zudo-stl-fix
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Quick Start

Check and fix your first STL files in a few steps.

Add files

Drag one or more .stl files from Finder onto the window, or click Choose Files… (also Open STL Files… in the File menu, ⌘O). Checking starts automatically; files are processed one at a time in the order added. You can keep dropping files while a job runs.

Queue showing healthy files and two repairs ready

Read the statuses

Each row shows a status under the file name:

  • No repair needed: the check found nothing to fix. No copy will be made.

  • Repair ready: a repair passed validation and is waiting to be saved. Any warnings appear under the row.

  • Cannot repair safely, Check incomplete, or Error: nothing can be saved for that file.

The full list is in Statuses.

Save

Click Save… on a single row, or Save Fixed Files… to save every ready result at once. Choose a destination folder. Each result is saved as <original-stem>-fixed.stl; if the name is taken, a numbered suffix such as -fixed-2.stl is used. Your original files are never changed.

After saving, the row shows Saved and a Reveal button that shows the file in Finder.

Next

  • App guide for statuses, saving, details, and cancellation.

  • Concepts for what "conservative repair" means and what a passing check does not prove.

Revision History

Takeshi TakatsudoCreated: 2026-10-16T13:23:11+09:00Updated: 2026-10-16T13:23:11+09:00