No Data Lost. // IFC → STEP AP242 · With PMI
OffBIM converts IFC building models into manufacturing-ready STEP AP242 files — preserving hole geometry, tolerances, and assembly data that every other tool silently discards.
Four capabilities. One pipeline. Zero manual translation.
OffBIM detects cylindrical openings from IFC geometry and exports them as CYLINDRICAL_SURFACE entities in a conformant AP242 STEP file — ready for CNC and fabrication systems.
Dimensional tolerances defined in BIM are preserved and exported as companion JSON metadata alongside the STEP file.
Multi-part assemblies exported with hierarchical relationships intact — NEXT_ASSEMBLY_USAGE_OCCURRENCE entities preserve parent-child structure.
OffBIM maps IFC semantic entities to their STEP AP242 equivalents without information loss.
Extracts IFC opening elements and reconstructs them as analytically exact CYLINDRICAL_SURFACE entities in STEP AP242 — the geometry IfcConvert silently destroys.
Generates tolerance reports, assembly relationship reports, and BIM-to-manufacturing mapping files — the Manufacturing Information Requirements your project is missing.
MIR · JSON · CSVSelect any element from your model and export it individually as STP, STL, OBJ, or AP242. Because manufacturing happens one component at a time — not the whole building.
STP · STL · OBJ · AP242Analyses geometry complexity, extracts Bill of Materials, and classifies elements by manufacturing readiness — giving fabricators the data they need before a single cut is made.
BOM · Complexity · DXFOffBIM is the output of a PhD research programme validated by 27 construction industry professionals across six dimensions including relevance, effectiveness, and intention to adopt.