Stack-able trays, is a collation of multiple trays with different compartment arrangement from 1 to 6. These are 72mm x 72mm on the outside; if larger is required, this can be easily done by using scaling feature in your 3D printing slicer. I am including both STL and STEP files, step format makes it easy to import into a CAD software and further modify/upgrade.
The author marked this model as their own original creation.