3D Printer - How to Build One
How to build a 3D printer at home - advice and diagrams. How the author built their own 3D printer.
3D Printer DIY: How to Build Your Own 3D Printer from Scratch
3D Printing: Build Your Own 3D Printer and Print Your Own 3D Objects
OpenSCAD for 3D Printing
Understanding 3D Printing (Volumes 1-4)