We helped contribute to this About.com article about the hardware, DIY electronics, firmware, and slicing software you'll need to get started building your own 3D printer. Building Your First 3d Printer Is Easier Than Ever. More in-depth stuff coming soon.
We needed a new printer for our shop, so we built our own! We've committed this printer to becoming an all open source design to join the ranks of RepRep 3D printers and beyond. We're calling this super sturdy design Voxel OX (like the animal). Parts list and sub assembly details soon. Until then, feel free to comment/message for more info if you want to build your own. Enjoy!