Custom PCB shape for a popular box selling on Aliexpress

OK so I figured out and documented how to create this as a part

This part

aliexpress-box-outline-100mmx68mm.fzpz (2.4 KB)

which looks like this in Fritzing (note I deleted the pcb rectangle that loads by default because if you don’t you have to select which board you are referring to and you can only drag the part in to pcb view not breadboard or schematic which it doesn’t have!)

and exports gerbers like this with the slots cut.

and the contour.gm1 file which actually cuts the slots and the board edges

Peter