case marker
thingiverse
to mark your reloading ammo case with an sharpie. note: maybe the hole to mout the sharpie is too small. scale up in the slicer or sand :)
Download Model from thingiverse
With this file you will be able to print case marker 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 case marker.