I own a DIY large scale 50W laser machine.
Specs:
50W china tube noname
Cohesion3D Laserboard with GLCD
Lightburn Software running Win10 with LB camera (not yet working)
XYZ tables with Nema17 --> total workspace approx. 1300mm x 600mm x 150mm
honeycomb bed thin with DIY Z-table (T8 rods)
air suction D=300mm Pabst airvent
chinese air compressor
approx 10L Water reservoir with 2nd water cycle through radiator/vents
Ambient temperature around 10-18°C all year, humidty 50-60%.