A HACK A DAY: Make a burning laser from an old DVD drive
How to Make a Burning Laser: 9 Steps (with Pictures) - wikiHow
How to Make Laser From Laptop DVD Drive - Instructables
HOW to make CNC LASER engraver DIY from DVD drive - YouTube
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