How to convert .3ds graphics to .easm format.
Converting Autodesk 3D Studio Scene graphics to eDrawings Assembly Files (.3ds to .easm conversion) should be quite straightforward, and doable using one of many available CAD/3D modeling programs, such as SolidWorks, AutoCAD, SketchUp (Pro version), and more.
A widely-used 3D animation application from Autodesk
Leading 2D and 3D CAD development software from Autodesk
An open source multiplatform 3D CAD/MCAD/CAx/CAE/PLM modeler
A 3D general-purpose modeling program
A 2D and 3D CAD construction software