I picked up one of these knives a while back and I wanted to keep it somewhere safe. As I'm using Gridfinity, it was originally in a 3x1x4 box, but I thought I'd try my hand at something a little more bespoke. It's a little tight, but functional and insertable at a slight angle to keep stress off the sides of the bin. I'll probably post another version printed with a slight internal angle to make it even better, but I thought I'd share my progress for now.

Printed in PLA at a 0.2mm layer height with a 0.4 nozzle. No supports or brim required.