Amazon.com: VAHIGCY Laser Engraving Machine, CNC Laser Cutter Wood and Engraver Machine, DIY Carving Milling Glowforge for DIY Logo Picture Marking and Metal Leather, GRBL Control, 460 x 770mm Large Area :
DIY 40W laser cutter - Make:
Make a CNC Mill With a Laser Cutter : 10 Steps (with Pictures) - Instructables
Advice for building a DIY Laser Cutter : r/lasercutting