Mitre box
thingiverse
To avoid a store trip, I crafted a mitre box/miter block with dimensions 20mm x 20mm x 80mm. In version 1.1, I improved it by incorporating smaller 1mm grooves at both 45-degree angles, enhancing strength through better groove spacing, and reducing height by 10mm.
Download Model from thingiverse
With this file you will be able to print Mitre box with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Mitre box.