I started looking at converting a spare 3D printer to a laser cutter/engraver. At the low end the kits specific to the printer only do engraving which isn’t compelling to me. Then at the high end is a kit that claims it works easily with and CNC / Printer (i.e. anything with X-Y steppers):\
Anybody tried this on a Shapeoko? Seems straightforward but it is very pricey.