I saw the Holster Runkel made and thought I should make one for the best box cutter I ever owned... The Stanley Fat Max
The way the Holster is made you don't really need the Magnets but for safety reasons I added them anyway.
You'll need 5x10mm N45 Neodym Magnets
I made the slots no the Blade can never be so long that you can cut your self as the box cutter is attached to the Holster but you can cut taped shut boxes right away since the Blade is peaking out a few mm, as seen in the third and forth Picture ;)
I bumped up the Layerhight to 0.3mm for most of the print, I graduatly got it down to 0.15 around the holes for the Magnets and the Beltloop overhang
Print it upright so there is no need for Support
Glue in the 5mm by 10mm Neodym N45 Magnets so they stick out a tiny bit and will always touch the side of the Blade