“Thingiverse is a free library of files for printing in 3D. Search or browse for a thing you want and there’s a good chance someone has already designed a model and posted a free version for downloading. Thingiverse has been around a while but I just got my first 3D printer so now I am singing its praises. Some models are easier to print than others, but the files are standard 3D format so you can easily edit, modify, or improve it any way you want. It’s like having a public library of e-things instead of e-books. Its existence is one of the reasons I got a 3D printer.”