"To arrange my Solarpanels to each other i've designed a arrangement cross. Just see the pictures. It saved me a lot of time.

The horizontal gap is about 2cm, the vettical gap about 1cm.

I've added a little knop to get it easies out after screwd down the panels."

M5x50 screw and M5 nut needed for knob

This is a model created by https://www.printables.com/de/@KalleKnall and was first uploaded to https://www.printables.com/de/model/525370-solapanel-arrangement-cross-solarpaneel-fliessenkr , there were no changes made to the original model.