After creating tool holders from CAD and saving the holder to the database, the holder shows being saved but has no visual representation.
Issue
The tool holder was created from the manufacturer's CAD and collected under the curve editor. Finally, the holder was saved to the database, which now shows the holder being saved without visual representation.
Answer
Create the pattern using the Composite Curve creator, not through the collect method.
Collecting the geometry creates an Arc-line Curve, which could potentially not save to the database correctly, as combining the arcs and lines could create potential issues with the revolution.
For the best result, follow the steps outlined in How to make a tool holder from a DXF model