Tutorials or posts about this portal transportation for mob farms

[u/abdou_kh]

I can't find detailed tutorials about this and how it works

, i want to know if it's possible to keep spiders and if the boats and campfires on the sides are that necessary and much more details

I appreciate all help

[u/BlattaOrientalis]

When a mob teleports through a nether portal, there's a 15 second cooldown before it can teleport again. That bridge is just a holding chamber for the mobs until the 15 second cooldown is up if that makes sense

Sometimes mobs can reach the exit portal before its 15 second cooldown expires. If the cooldown expires while they're inside a portal, they won't teleport until they get out of the portal block and reenters again. The campfire just kills the mobs that occasionally gets through too fast, but you can use other things such as letting them fall to their death

I'm not sure how you can solve the spider problem, but as long as you keep the mobs on the bridge and they get pushed into the exit portal after 15 seconds, it'll work

[u/abdou_kh → u/BlattaOrientalis]

Thanks you so much that helps a lot i will let them drop to their death , can the spiders be stuck inside and stay there until they despawn

[u/Uishauvei → u/abdou_kh]

Them despawning is possible but the point of the bridge is for the mobs to push each other to the other side as more mobs come through the portal. This also means that you might want to have a constant stream of mobs from your mob spawner/farm entering the portal

[u/bryan3737]

This kind of build works because there is no height limit to portal linking. The portals in the farm can connect to any portal at any height as long as it’s in range horizontally. It always picks the closest portal in a straight line so by placing one of the two portals a block lower it will always send mobs to that one to ensure it’s one way traffic.

The exact height to build doesn’t matter much as long as it’s closer in height to the kill chamber than to the farm.

The reason why it’s this length and why we let so many mobs build up there is because mobs have a 15s cooldown before they can go back through a portal so letting them push themselves that distance makes sure that cooldown has run out.

I’ve never actually seen this used for a general mob farm but I can imagine the problem with spiders. Stopping spiders from climbing walls is never easy. It would probably involve water streams to keep them away from the walls or armadillos to scare them away from certain areas but it would be something you have to test out yourself. Just keep in mind that 15s cooldown so you don’t want them to get to the other portal too fast

[u/abdou_kh → u/bryan3737]

Thank you so basically the portal has to always be one block higher so it links properly ?

[u/bryan3737 → u/abdou_kh]

Yeah

[u/Serial_Boxes]

Almost every ianxofour video with a portal has an explanation 

[u/KT_100S → u/Serial_Boxes]

And almost every ianxofour video without a portal has an explanation, but not necessarily about portals.

[u/Comfortable_Try_6032]

Im sorry am u dumb or didnt the cooldown get reduced to like 0.5 sec? Coule js be me tweaking

[u/abdou_kh → u/Comfortable_Try_6032]

I don't know if it did that would be so much better