K40 eBay Chinese CO2 Laser Cutter & Engraver – Laser Engraving a Rock

Please visit www.DIY3DTech.com for more information on this and many other projects!  As in this episode we will be engraving a rock!  Yes you read that correctly, we will use our K40 eBay Chinese CO2 Laser Cutter & Engraver to laser engrave a rock!