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engravR: Build a Pi-Powered Laser Engraver - Make:
Mini Laser Engraver Could Carve Out A Place On Your Desk | Hackaday
Turn DVD Drives Into a CNC Laser Engraver - Hackster.io
DIY Mini CNC Laser Engraver. -
What can you cut with a 300mW DIY laser cutter? | jenslabs
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