Yup on a 2 dimensional surface or if all three share a plane it’ll never work. Only way would be if one was extruded and the other two weren’t touching.
I don’t know if there’s anything specific to read. It’s a basic mechanic of gears. They turn connected gears in the opposite direction. If the gear you’re spinning is attached to two other gears, they’ll both want to spin opposite the first gear, and the same as each other. If they’re both connected they’ll try to make each other spin opposite themselves too, which obviously can’t happen.
Yup on a 2 dimensional surface or if all three share a plane it’ll never work. Only way would be if one was extruded and the other two weren’t touching.
Where do I read more a out the theory behind this?
I don’t know if there’s anything specific to read. It’s a basic mechanic of gears. They turn connected gears in the opposite direction. If the gear you’re spinning is attached to two other gears, they’ll both want to spin opposite the first gear, and the same as each other. If they’re both connected they’ll try to make each other spin opposite themselves too, which obviously can’t happen.