Mitre box designed for cutting cornice. The blade slit is 2mm wide. It has steps for cutting 90, 75 and 55mm cornice.

Not sure how to use the steps? Check out this blokes video on youtube
https://youtu.be/6EtiCDb-EKg?si=SHfLa08wYaYiOUUU&t=253

I made this because I found the cheap ones you can buy are either flimsy, inaccurate, or both, and the good ones are a few hundred dollars - inappropriate for small home jobs.

This print is cheap, accurate, and works perfectly.

It is a decent size print - to save on time and filament, I recommend you use less infill and more perimeters to keep it strong. I used 4 perimeters and 15% infill, and it was just fine. I also strongly recommend you use a bed adhesive like Filaform (that stuff is fantastic) to prevent the base from lifting.