Stackable plant support stick.

To securely join two sticks you need either a wire or, my preffered method, a short filament piece.

Pass the filament piece though the hole one two sticks are joined together. You then heat up the filament piece and press fit it against the stick. Do this on both sides and you have a clean and secure connection.

Supports not needed. I am satisfied with 10% infill and 0.8mm walls.