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Troubleshooting
Ely edited this page Nov 2, 2026
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Most slow or cluttered drawings come from hidden lines on heavy models; most failures are explained in ichno-log.txt.
| Situation | What to do |
|---|---|
| Heavy model (millions of triangles), slow drawing | Tick Fast for drafts, turn off hidden lines, or split it with Sheets by Collection |
| Curved surfaces covered in facet lines | Raise the Crease angle |
| Isometric view too busy | Leave hidden lines off on the isometric view |
| The drawing failed | Open ichno-log.txt, written in the drawing folder, and attach it to a bug report |
| “Blender stopped before the end” | Usually out of memory: try Fast, fewer views or one sheet per sub-assembly |
| Open the drawing in AutoCAD or another CAD tool | Import the SVG or PDF |
| Wrong side shown as the front | Change Front View (Views panel) |
Bugs and ideas: open an issue with your Blender version and, if possible, a small .blend file.