CADENA rebuilds editable CAD programs one step at a time

Soslan Kabisov · hf · 2026-08-04

CADENA reconstructs editable CAD programs step by step

This paper tackles CAD reverse engineering: turning an existing 3D shape into an editable parametric CAD program.

• Unlike one-shot generation methods, CADENA grows the CAD sequence one operation at a time and checks the predicted geometry after each step.
• The authors also introduce CADENA-Bench, a new benchmark for mechanical-part reverse engineering across multiple categories.
• CADENA reports better results than prior methods on CADENA-Bench, as well as DeepCAD, Fusion 360, and MCB datasets.
• Code, weights, and benchmark are publicly released.

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