I have a project and the 3D objects I pick up here are stored in .igs format, is there any way of converting them to .tcw or something that TurboCAD can read other than .dxf?

I have a project to build a Monoposto Austin Seven Special. I would like to enter the project into CAD format so the engineering shop can read the files in 3D form. The objects I can pick up here are stored in .igs format, is there any way of converting them to .tcw or something that TurboCAD can read other than .dxf?