My Heavily Modified K40 C02 Laser $400 C02 Laser Upgrades
Make That Laser Cutter Blaze: Upgrade a K40 - Make
Which Laser Should You Buy? - Make
Lightobject Power Z Table/Bed for Small CO2 Desktop Laser Machine (Ideal for K40 Upgrade) : Home & Kitchen
Simple upgrades for your K40 OMTech Co2 laser
Make That Laser Cutter Blaze: Upgrade a K40 - Make
K40 Laser cutter - more upgrades