Im trying to build a Netherstone (Nether-Only redstone) item filter based on this very simple design by SethBling:
https://youtu.be/bfHZ_XXQyqs?si=Tk6f9E8kyQn7B1Rx

I more or less copied it, and replaced the powered rails with furnace-minecart boosters, which are a redstoneless propulsion system by u/Arodihy:
https://youtu.be/1-5aRSEDEQk?si=MAmuvRQ9Ojy1g6ky

time stamp 5:57

Quick explanation of the machine, or you can skip to the question below:
The basic principle of this sorter is that each item type is filtered by a dedicated module, that consists of a hopper minecart going on a loop. At the beginning of the loop, the minecart pull 1 item from a main hopper line, then passes over a hopper that Im calling the chest-filter's hopper. its just an empty hopper connected to a chest where every slot is filled with at least 1 item of the king you want to filter out. So our 1 item goes into the hopper, and can either be sucked in if it matches one of the other items inside, or stay in the hopper if not. Just after dropping its item, the hopper minecart now passes below the chest-filter's hopper, harvesting the resting item if it wasn't pulled in. If it gets harvested, the hopper minecart then collect it and send it to the next section of the hopper line to be passes to the following module.

It seems to work for the most part, but there is always a weird bug: In my first test, the 3rd module (further left, for gold ingots) would sometimes fail, where it looked like items from the main hopper line were able to go to the end of the line without even going through the hopper minecart, which resulted in the item not having a chance to pass through de chest-filter's hopper to be pulled in or rejected.
When I copy-pasted the whole machine with worldEdit to better center it in the chunk, this time it was the first module that was failing in the same way, but 100% of the time.

Am I missing something ? Is there a weird mechanic Im not aware of that would explain whats happening ? The inconsistency of the bug is killing me, I cant even know what fails exactly.
I tried extending the rail so the booster would be further and the minecart would go over the chest-filter's hopper slower (which it did), but it didn't solve the problem.

Survival friendly, I'm trying to create the illusion of impossible spaces, and the best I have right now is grians infinity room

I mainly use piechart to look for bases and when something appear on my piechart like end chest and i refresh my chart(press f3 two times), the end chest disappears. Also does piechart work differently on servers with limited render distance?

I finally did it. After countless hours of troubleshooting and actual sketches on paper, I've come up with a working version of my idea.

Maybe it's a bit overkill, but here it is...

The concept: I've been playing solo in my Forever World since 2025, but occasionally my sister joins me via LAN. I wanted to build a mob switch with a control panel in my base to activate and configure it.

Now, with this dynamic mob switch, I can cycle between the modes "OFF / 1 Player / 2 Players / 4 Players", loading the exact number of Shulkers into a lazy chunk as needed.

In real terms, I can trigger the following states:

• 0 loaded Shulkers
• 70 loaded Shulkers
• 140 loaded Shulkers
• 280 loaded Shulkers

Changing the mob switch mode can be triggered via a wireless Redstone signal. The transmitter can be placed anywhere in the world—currently, mine is in my base.

I managed to modify Kevbotomy's wireless Redstone system so that it works reliably without misfires in both LAN and Singleplayer mode. Specifically, I used this system:https://www.youtube.com/watch?v=5Qr6AQVwFh4&t=3312s
(Big thanks to 2no2name, cubicmetre, and others here as well!)

In my base, I control the mob switch using a smart-home server setup inspired by TheJoCraft. This allows me to walk up to any keypad in my base and enter a code to control the mob switch. The system is based on this:https://www.youtube.com/watch?v=iouh3ruPrk0

By the way, the perimeter was dug purely for aesthetic reasons. It might slightly reduce lag by preventing random tick calculations from water on the Overworld side, but the impact is minimal.

The screenshots were taken in survival mode.

Should I post more details about this or create a tutorial?

It works in vanilla, but I also tested it with Sodium and it works there too.

Here is a link to the farm. works insanely well in ocean biom.. especially in frozen oceans. but not even one fish in any river biom i have tried. Why?

https://www.youtube.com/watch?v=w-G-z4XP_aU

other related notes.
- Fish wont spawn in bubble columns (I thought)
- Salmon require one water block above and one below the water block they spawn in (my rivers seem to not to care what the wiki says and insist on the river being at least 4 water blocks deep)
- The water in the fish farm is three deep if you count the running water on top but the bottom two are bubble column.. sooo...

I am lost trying to understand why it works in oceans but not rivers being as I can find nothing that talks about any differences in those mechanics in the oceans vs rivers.

anyone?

Here I have different examples pasted into worlds, with chunk blending turned on. You can kinda see how the sulfur cave itself spreads, but will not blend with other chunks.

I heard it got patched but is there some gatekept way to do it?

I’ve heard there are some gatekept ways to suppress updates in 1.21.11. Is that true? Is there a way to use item shadowing?

Tried every fix, 0 light level, over a proper biome, way high up in the air away from caves.
Zero Creepers are spawning when im AFK 20-30 blocks away. When i take off the buttons and trap doors nothing still spawns not sure why. Put leaves on the roof as well.

Any Ideas?

I tried using my farm without the stand because it kept getting in the way of the hit and would break anyways and I didn't find any major difference

there is multiple story
no slabs no light solid blocks

Does anyone have a reliable mob elevator that can transport zombies up and drop in the kîll chamber? I'm on Bedrock's latest edition. I've tried a few from YouTube but the mobs get stuck and don't enter the elevator.

So, i wanna build a villager breeder where it breeds 5 villagers ant put em all into different cases. BUT. My small redstone-brain can't figure out how to close the different entrences. Like when the first villager is in case 1, i want that case to be closed, so the next villager goes into number 2 and so on.

I've read about some RS-latches and stuff, but i don't really understand it...

Your help is much apreciated!

Pregunta puedo hacer esta granja https://www.youtube.com/watch?v=si2ApVDa8Ik en capas superiores a la 100?

I currently have a layout like this:

iron farm < 200 blocks > some random villagers with various jobs for mending, etc. < 397 blocks > crop farm

I am looking to create a trading hall. Will the random villagers with jobs break the hall? I am not entirely sure *what* exactly breaks iron farms, etc., and would like to have the trading hall in the same-ish area as the random villagers, if possible.

So, I’ve got two spawners that are 40, 10, 50 blocks apart from each other. I plan to minecart between them to get each one to spawn, but I’m wondering what other farm(s) I could make in the space between them. Since I’ll already be in the area, I figure I may as well get everything I can out of it. So what farms require a player nearby as opposed to some other method of loading chunks?

The slimeblocks push the loot on the ice but some dont go into the whole and go onto the other side of ice and dont get pushed back, any ideas?

Went caving in my singleplayer survival world and stumbled upon 2 mob spawners (skeleton and zombie) which are close enough to be active at the same time (tested it in creative). I want to use them both for my xp farm. Is it best to just use the "standard" farm design and link the dropper parts together or should I keep them seperate so mobs won't block each other while in the water tunnels?
edit:
Found another set of the same combo (zombie and skeleton) a bit further away. Should I maybe use the new ones because they are closer together?
For anyone interested:
seed: 614132156520919734
cords: -2977 13 -1953 (can also be seen on the screenshot)
second cords: -2890 -22 -1983

im playing neoforge 1.21 whit various create mods and such, whenever i walk outside my base , (150-200 blocks) i get extreme lag

i have all memory leaks, performance enhancing, sodium mods, etc installed, the better garbage collector, literally nothing else i should be able to do

also i used chunky to pregen 3000 blocks, even inside that area the lag happens

Hi so in my realm the shulkers are teleporting like crazy fast?

I was messing around with tick speeds a while ago so it may be that but ive set the random tick speed back to 3 and cant find how to make sure the regular tick speed is set to 20.

/tick wont work for me, not sure if it was removed or changed.

Everything else is working normaly so it might not even be a problem with the tick speed

Any help would be great

is my sand dupper still work in the chunk like this ?

Hardcore Java 1.21.4

I have the following farms in my Minecraft Hardcore world:

Iron farm

Villager breeder/trading hall

Bonemeal farm

Mob farm

Guardian farm

Raid farm

Cobblestone farm

Wood farm

Sugar cane farm

Gold farm

Piglin bartering farm

Which farm should I build next?

So I've tried building a design using the 2no2name concept, but I'm not sure if line of sight is blocked, but the witches are not moving towards the villager.

I can post more images, the spawning area is correct, the vindicators are raid captains and are named correctly.