Eggfur | 2x3 synchronised piston doors @Eggfur | Uploaded July 2020 | Updated October 2024, 1 hour ago.
This is a video that shows how to create simple 2x3 piston doors and how to synchronise their opening and closing when they're quite far apart.


I made this specifically for a Reddit user Kingbertiethefirst, but I hope others may find it useful as well.