@queequeg it's a custom version of designs off openbuilds.com machines. 3 axis cnc designed for a router but you can use it as a plotter or use a drag knife or laser. It uses aluminum extrusions for the frame. The controller hardware is a GRBL based board, spark v3 pro. I have that hooked up to a Raspberry Pi 4 that runs OpenBuilds Controller. It was an unfinished project I got from someone who was going to use it for ski building, so it's a long machine. It took some tinkering to get it to a running machine. I still need to get it fully dialed in, make a spoil board and add some better limit switches. It's been a fun project to pull me away from the XBOX at night.