Hello everyone My name is Alex,i am working on my new 3D Printing Invention and that is a printer which can change size towards the customer needs , the smallest size is 200x200 then v2 is 200x400 and v3 is 400x400 printing size so its very big. And the best thing all this versions are one PRINTER so you can just extend and reduce how you want . Heated Bed Plate included,2 extruders,and battery. As well there will be plugins for CAD Programs such as SolidWorks, 3Ds Max, Inventor ETC. Check out this Facebook page and i would really like to share more information with you so i can make this printer better . TRUST ME YOU WILL LIKE THE IDEA! X3D Xtreme 3D-Printer | Facebook Thanks for all feedback!