A DIY laser engraver build using DVD and CD-ROM/writer – Dangerous Prototypes
16-Year-Old Creates a Working Laser Engraver From 2 DVD Drives & 3D Printed Parts for $30 - 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing
DiY Mini Laser Engraver Machine - Hackster.io
engravR: Build a Pi-Powered Laser Engraver - Make: