Here is a new DIY CO2 laser cutter project from Instructables. It was developed by Michiel Deschout and uses relatively available materials and parts like 3030 aluminum T-slot profiles, Arduino and some 3d printed parts. The total cost was some 1900 Euro.
Very detailed step-by-step build guide with all the files can be found at:
https://www.instructables.com/id/Make-Your-Own-High-Quality-CO2-Lasercutter-With-To/
Here is the back side with 3d printed holders for the CO2 laser tube:
The presented setup uses 40W laser, but the power could probably be increased.
Very detailed step-by-step build guide with all the files can be found at:
https://www.instructables.com/id/Make-Your-Own-High-Quality-CO2-Lasercutter-With-To/
Here is the back side with 3d printed holders for the CO2 laser tube:
