Build a Super Cheap DIY 3D Printer from Old CD-ROM Drives | All3DP
Make Your Own 3D Printer for Under $60 Using Recycled Electronic Components with Instructables Design - 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing
Super Cheap 3D Printer From CD-Rom Drives : 13 Steps (with Pictures) - Instructables