Recently I bought some sorting boxes on Amazon from a seller which could be bound together. I found the idea realy nice and you could stack the boxes very easily.
I decided to buy them again and this time the same boxes were delivered with only one difference the connectors were missing. I contacted the seller but he was not helpful at all so I deciced to design my own connectors and here they are.
Maybe someone will find them helpful.
I printed them using eSun ASA+.
The author hasn't provided the model origin yet.