The video explains how FeatureWorks in SOLIDWORKS converts imported and legacy geometry into fully editable, feature‑based models. It covers automatic feature recognition, sketch dimensioning, editing fillets, patterns, sheet metal features and complex shapes such as lofts and sweeps. It demonstrates dissolving 3D Interconnect links, using automatic and interactive recognition modes, and rebuilding a complete feature tree for improved control. The video highlights how FeatureWorks preserves face IDs to maintain assembly mates, making design updates seamless. Overall, it shows how FeatureWorks streamlines modifying imported parts and transforms them into intelligent SOLIDWORKS models ready for further design changes.