How do you build the hypertube cannon?

[Guizin]

I can't figure it out

[76561199028753832]

i am terrible at explaining but i can show u how

[Bobucles]

https://www.youtube.com/watch?v=t2X3wlvoShg
Start at 18:00

[DrNewcenstein]

You need multiple Entrances lined up one behind the other, or you can do a large circular one with 2 openings, and when you've built up enough speed, press the control in the direction you want to launch.