Summary

I decided to plant Sugar Baby Watermelon in my indoor green spot, never expected it to really thrive. I am glad I was wrong.
Long story short, now I need a nice large trellis, something bigger than the one I made before https://www.thingiverse.com/thing:2923025
This one is done in parts that you connect together to get the size you want. It also has "Long connectors" to create attachment to another layer. Original STL is rather small, i printed it only once and immediately scaled the whole thing 200%. Connectors are rather snug, and I prefer it that way. In case you have problem fitting them to hexagons just play a bit with scaling. My original print is PLA, 0.2 mm line width, 15% infill and it is plenty strong.