Groups 3D Scaning & Geomagic Design X Biomedical Engineering (designers) 3D Printer Builders/Designers Laser Cutting 3D printing Operators and Maintenance. Design Automation Reverse Engineering GrabCAD USA GrabCAD India Mechanical Engineering CNC Machinists CAD Macro/Automation Laser cuttable designs Autodesk AutoCAD Autodesk Inventor Users 3D Printers, Makers, DIY hacks, solutions and post printing tools Electrical Engineering & Electronics Design Medical Industry Engineering Trends Technical Drawing/Drafting 3D Printing Group