I replaced the 2500mW laser with a 7000mW laser for faster engraving/cutting speed.

And I also added aluminum plates to the sides, the bottom and the back and added a fan for the exhaust to the backplate.

The machine is now ready for engraving (and cutting of thin material).

The galvo assembly could also be used for 3D printing in a SLS or SLA 3D printer.

Maybe I should do this next...