Potential Artifacts and Issues (When They Are Not Clean)Distorted or Missing Fillets/Surfaces: Complex fillets—particularly "star-shaped" fillets where multiple edges meet—can fail, creating gaps or incorrect geometry in the exported file.Surfaces Not Joining (Non-Watertight Solids): If multiple surfaces are not properly "stitched" into a solid in Fusion, the STEP file may contain gaps or unstitched bodies.T-Spline to BREP Conversion Issues: Complex Sculpt/Form (T-Spline) bodies converted to solids can produce "dirty" geometry or high-tolerance edges that fail downstream.Hidden Components Missing: Hidden components or bodies in the Fusion design tree may not be included in the exported STEP assembly.Tips for Getting Cleaner STEP ExportsUse the Validate Tool: Before exporting, use Inspect > Validate to detect and repair invalid surfaces.Stitch Surfaces: Ensure all surfaces are stitched into solid bodies with reasonable tolerances before export.Avoid Complex Fillets: If fillets cause issues, try to fillet them at the very end of the design timeline or simplify the geometry.Remove History: If a file is causing errors, try saving as a new file, turning off the timeline ("Do not capture design history"), and repairing any imported bodies.Export from Local: Export to a local drive rather than a cloud drive to avoid file corruption