Cartoboard connector

This is a simple connector for bambu labs filament boxes to join them verticallyAssembly:1. cut ut the bottom of 1 box but leave out the corners and holes for thick wall parts2.start with the edges and from there push the 2 “teeth”3.Insert the rod through the top and bottom holes to secure it. Push the "teeth" as far into the carton as possible to get it in. (The bottom hole is a bit tricky, but once it's through, it’s secure.)4.repeat steps 2 and 3 for all 4 corners at the thin walls of the cardboard