Overview
because it took me two hours to find out
How to build a vertical pipe
1. Place the buildings and mana connectors
2. Deselect everything, right-click and drag to rotate the camera to this angle
3. Build the pipe, dragging it upwards
4. Watch some mana crystals go through
If you place the pipe first and then add the connectors, sometimes it will not work and you’ll have to drag the pipe again.