Start with two models
Choose a trusted baseline and a candidate revision. Import and analysis run in a dedicated browser worker; model data is not uploaded.
Step 01
Choose and interpret source files
STL and OBJ do not carry authoritative units or up-axis metadata. Confirm both explicitly before analysis.
Analysis method
Sampled surface distance
Approximate, tessellation-dependent comparison at a 0.1 mm distance tolerance. Preconditions and uncertainty remain attached to the result.
Complete both source interpretations
Local boundary: source bytes, normalized geometry, and analysis remain in this browser. No network-backed model service is part of this workflow.