The part model has gaps between its faces, or a completely enclosed hollow inside it. The Assessment stage lists this under Machinability issues as Non water-tight model. On the part body it's a severe issue: the Setups stage and Run CAM Assist stay unavailable until you fix or dismiss it. If you dismiss it and run CAM Assist, the run stops with this error:
Geometry assessment error
The issue's recommended action says you can ignore it. For the part body that doesn't work: the run fails. Fix the model instead.
How to fix it
- In the Assessment stage, under Machinability issues, click Non water-tight model to expand it, then click Show on model to highlight the edges where the gaps are.
- Close CAM Assist.
- Repair the model in your CAD or CAM package so it's a single closed solid: close the gaps between faces, or remove the enclosed hollow. CAM Assist can't repair the model itself. For the tools to use, see your CAD or CAM vendor's help on repairing or stitching solid models.
- Start CAM Assist again and check the Assessment stage.
While the part has gaps, the assessment skips its reach and hole checks. After you fix the gaps, new issues such as Unmachinable surface may appear. See The guided workflow stages.
Is it on the stock?
Gaps in the stock body are a major issue, not a severe one, so they don't stop the run. We strongly recommend you fix this warning before you continue: a stock body with gaps can cause problems later, for example when the program is sent back to your CAM package.
Still seeing it?
If the model is a closed solid and you still see this message, contact CloudNC support. Include the part file and your CAM Assist log files: see Find your CAM Assist log files.
Videos
These CloudNC Academy videos were recorded with an earlier version of CAM Assist, so the screens look different.