Snap Fit Stackable Parts Trays

I wanted to be able to stack them securely so I added some ridges so they'd snap together. They connect with a satisfying click but pull apart without much effort so you don't spill everything in the process.

Included is the FreeCAD file incase you need to change up tolerances for your printer.

My settings:
Initial Layer Height: 0.3mm
Layer Height: 0.15mm
Supports: None