sh9
thingiverse
Download the free file from the internet, and you'll find a compact assortment of coffins in 4mm thickness. The files may require some fine-tuning to meet your specific requirements, but they're ready for use as is. I've intentionally left out any cutting, so you can modify them according to your needs.
Download Model from thingiverse
With this file you will be able to print sh9 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 sh9.