It requires a 2020 T Slot Aluminium Extrusion Profile

You can mount a Xacto Knife or Glass Cutter or even a Pencil with a few zip ties and draw/cut perfectly straight lines

It moves in the Tslot channel like a Tnut. Use some plastic safe lubricant like Silicone Oil for smooth movement.

I am using it for straight cuts on EVA foam and Ikea lots mirror for my 3rd printing bed.