I didn’t account for kerf. Also, there is a bit of overlap in lines in the vector that created a bit of an extra burn in one corner. I am guessing with a little bit of tinkering, someone could get the pieces to fit together a bit better.
Here is a PDF of the file I used (I tried to upload an SVG file, but I could not get it to load properly). I created a simple tray to hold the pieces together.
Ostomachion.pdf (43.3 KB)