Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5425196.
I needed a way to display the Collapsing Master Sword (link below) but couldn't find a pedestal. I used the base of the lock box, doubled the size, and used the widest blade as a starting point for the hole. After some trial and error, I found that adding just a millimeter or 2 on the X & Y worked the best. It's not perfectly snug but I'm able to hold the base at 90 degrees without the sword falling out so it's pretty secure. I also didn't to have to apply a lot of force to either secure or pull the sword from the base. I think it looks more impressive to effortlessly pull it out and have the sword extend on its own.
Collapsing Master Sword by 3dprintingworld: https://thangs.com/designer/3dprintingworld/3d-model/Collapsing%20Master%20Sword%20with%20Replaceable%20Blade-35659