Instructables user wootin24 developed a small multifunctional machine that can be a small (very small) CNC, plotter or 3d printer. It has fully 3d printable frame and it is powered by junk optical drive motors. 3d printable frame and recycled motors make it very cheap to make ...
All the files for this machine and instructions to make it can be found here:
http://www.instructables.com/id/Extremely-Low-Cost-3D-Printable-3D-Printer-Plotter/?ALLSTEPS
All the files for this machine and instructions to make it can be found here:
http://www.instructables.com/id/Extremely-Low-Cost-3D-Printable-3D-Printer-Plotter/?ALLSTEPS