Deliver STEP BRep geometry as ACIS
STEP-to-ACIS conversion combines OCCT STEP reading with the ACIS writer. Select SAT or SAB output according to the receiving application’s requirements. This guide focuses on translating supported BRep geometry into ACIS entities.
STEP also supports mesh data. A mesh-only STEP input therefore needs explicit assessment for this route: do not infer that a BRep writer reconstructs smooth CAD surfaces from triangles. Identify the input representation before selecting the target.
Set an ACIS output version
Reader and writer version coverage differ. The published component description lists ACIS output through version 7; confirm the selected delivery and the SAT/SAB variant with the intended recipient.
Read the source into XDE when names and colors are needed, preserve their relationship to the shapes and configure the writer. Source attributes and presentation information beyond the supported mapping should be tracked separately rather than silently counted as retained.
Verify geometry in the recipient
Reopen the ACIS file in the target application and check shape coverage, scale, topology and relevant attributes. Include complex surfaces and any translated or approximated geometry in the comparison. An output that opens successfully may still require checks for the next modeling operation.
Use ACIS to STEP for the reverse direction. If the destination actually requires DXF entities containing ACIS bodies, review STEP to DXF: that route uses the DXF writer and has its own entity and version configuration.