CO2 Laser Engraving Machines with Motorized Z-Axis are incredibly convenient for all types of DIY laser projects. Equipped with a motorized lift that moves the workbed up and down at the push of a button, the ZF CO2 Laser Engraver Series removes the labor of laser focus, while keeping the freedom of manual focal distance. If you change focal lenses often, a ZF series laser machine is the most user-friendly option for you.