Fillet R&D Face, edge and general topology insight Missing API's TwoAdjacentFaces2 Method Ref: https://help.solidworks.com/2014/english/api/sldworksapi/solidworks.interop.sldworks~solidworks.interop.sldworks.iedge~gettwoadjacentfaces2.html Complete Edge API Ref: https://help.solidworks.com/2014/english/api/sldworksapi/SolidWorks.Interop.sldworks~SolidWorks.Interop.sldworks.IEdge_members.html Complete Face API Ref: https://help.solidworks.com/2014/english/api/sldworksapi/SolidWorks.Interop.sldworks~SolidWorks.Interop.sldworks.IFace2_members.html Ref: https://docs.techsoft3d.com/exchange/2024/api/group__a3d__feature__fillet__module.html https://docs.techsoft3d.com/exchange/latest/api/group__a3d__feature__description__fillet__module.html https://help.solidworks.com/2014/english/api/sldworksapi/solidworks.interop.sldworks~solidworks.interop.sldworks.ifeaturemanager~featurefillet2.html https://help.solidworks.com/2014/english/api/swconst/SolidWorks.Interop.swconst~SolidWorks.Interop.swconst.swFeatureFilletType_e.html