I am seeing a lot of different 3D printers and all of wich are more compact and made to print small objects. What i am wanting to know are there 3D printers that can be made for the home that can print large scale objects and if there are not then how can i build one of my own for printing large scale objects? Another question i have is are there mediums other then plastic that can be used to print 3d objects and how can we get our hands on this kind of printing hardware to print objects out of metal and other mediums? Thank you for reading and i look forward to your answers and replys.