This grbl controller board can upgrade your 40w CO2 laser engraver to be compatible with lightburn sofware. This grbl controller arduino belongs to cnc makers. Best Engraver & Cutter Co2 Laser Cutter Co2 Laser Engraver Co2 Laser Machines Monport Laser Machines Monport 80W Laser Cutter Monport 40W Laser Cutter About us:- Monport has supplied inexpensive engraving equipment and interesting engraving arts, user training & understandable operation video. Phone Number:- 1-800-829-493 Visit Us:- https://monportlaser.com/