Thread Insert

What the source does

• FilesystemNone observedNo reads or writes in the source
• NetworkNone observedNo outbound calls in the source
• ShellNone observedNo commands run in the source
• DependenciesPinnedNothing floats
• SecretsNone foundNo keys in source

Five audit layers

Gates applied: no behavioural pass.

Audit 0.4.1 · source sha 24034f36bad7 · 19 Oct 2026Report an issue or request a re-scan

• Publisherghbalf GitHub userOwner of the repository this skill is read from
• Source folderghbalf/freecad-ai/skills/thread-insertThe exact folder we audited
• LicenceLGPL-2.1As the repository states it
• Commit pinned for this verdict24034f36bad7A new audit runs when the source changes
• Repository statusNot archivedLast push 2 days ago
• Sandboxed runNot runSkills are read, not executed; layer L4 is skipped

Its description: Create properly sized holes for heat-set threaded inserts (common in 3D printed parts).

---
name: thread-insert
description: "Create properly sized holes for heat-set threaded inserts (common in 3D printed parts)."
---

# Heat-Set Thread Insert Holes

Create properly sized holes for heat-set threaded inserts (common in 3D printed parts).

## Standard insert sizes (hole diameter / depth)
- **M2**: hole d=3.2mm, depth=3.5mm
- **M2.5**: hole d=3.6mm, depth=4.0mm
- **M3**: hole d=4.0mm, depth=5.0mm
- **M4**: hole d=5.6mm, depth=6.0mm
- **M5**: hole d=6.4mm, depth=7.0mm

## Parameters to ask (if not provided)
- **Insert size**: M2 / M2.5 / M3 / M4 / M5
- **Target object**: which body/feature to cut into
- **Positions**: XY coordinates or face + offsets
- **Through-hole below insert?**: if yes, add a smaller through-hole (screw clearance) below the insert pocket

## Construction
1. For each position, create a sketch on the target face
2. Draw a circle with the insert hole diameter
3. Pocket to the insert depth
4. If through-hole requested: add a second smaller circle (screw clearance) and pocket through-all

## Clearance hole diameters (for through-holes below insert)
- M2: 2.4mm, M2.5: 2.9mm, M3: 3.4mm, M4: 4.5mm, M5: 5.5mm

## Cleanup
After construction, hide all sketches for a clean viewport:
```python
for obj in App.ActiveDocument.Objects:
    if obj.TypeId == "Sketcher::SketchObject":
        obj.Visibility = False
```

Excerpt, first 1,353 characters of SKILL.md, verbatim from the audited commit. It is text from someone else’s repository, quoted so you can judge it before your agent reads it.

git clone https://github.com/ghbalf/freecad-ai
git -C freecad-ai checkout 24034f36bad7

Works in

1. 2026-10-19
   ✓SAFE B 89 / 100

   first audit · source 24034f36bad7

Questions about Thread Insert

• github.com/ghbalf/freecad-ai/tree/master/skills/thread-insert — the audited source at commit 24034f36bad7 and every finding aboveObserved · 19 Oct 2026

Spotted something wrong? Report a correction · Methodology