Bring an STL mesh into USD
This route combines the OCCT STL reader with the USD writer. It places existing triangle geometry into a USD, USDZ or USDA scene, allowing a mesh asset to participate in a wider visualization or scene-authoring pipeline.
The source geometry can remain a mesh throughout the conversion. CAD surface fitting is unnecessary unless the application separately requires reconstructed engineering geometry.
Establish the scene context
Choose the intended coordinate scale, orientation and scene-item name. STL input does not contain a full product hierarchy or material definition. The host application may supply those properties from its own data, but they should not be presented as recovered source attributes.
The USD component supports materials, metadata and animation. Those capabilities provide places for application-authored scene content; they do not make geometry-only STL input animated or textured automatically.
Validate the selected USD variant
Specify USD, USDZ or USDA according to the receiving application and its resource-packaging requirements. Reopen the result there and inspect surface orientation, model extent and the identity of the exported item.
If the mesh needs preparation, Mesh Framework can provide checks and editing operations. If a closed envelope is required around imperfect triangles, assess Surface Wrapping separately because it changes the resulting surface. Keep the original STL for comparison and record any edits or scene enrichment made during conversion.