This project allows you to create wooden storage box. Connectors are designed for standard board measure 18.5 mm.
They are easy to use and leave wood untouched (you can decomplete boxes and use boards again).
The boxes are stable, ideally as a storage in the basement or as a flowerpot.
I made them from PETG filament.
I recommend to use new Prusa slicer 2.0 which allows to create custom supports (they are needed only for the middle connectors - under the 'bridge', tabs should be fine without support).