Minecraft Elegance: Instant Concrete Factory (Sand, Gravel, Flint, Java 1.21+, 28.8k/hr)

A surprisingly fast (28.8k/hr) and simple concrete factory that dupes concrete powder, converts them to concrete with instant water flow, and breaks them for collection using the new mechanic in 1.21 that breaks blocks over the obsidian platform when new entities arrive in the end dimension. Also dupes sand and gravel, and produces flint when duping gravel.

0:00 Intro
1:52 Materials list
2:05 Mechanics
5:23 Build tutorial
13:10 Usage instructions
14:38 Dry platform upgrade
15:15 Outro

FAQ:
"Not all of the concrete powder is being converted." or "the instant water stream isn't forming." The most common reason is not following the usage instructions 13:10, in the order specified in the video. Also be sure not to enter the end while the farm is running.
"Can you use more portal sides or multiple stronghold portals to increase the rates?" No, the timings for powder conversion and instant water flow restrict the maximum rates for the farm.
"How can I use both the Instant Concrete Factory and the Instant Obsidian Farm?" I recommend building up a lifetime supply of obsidian first, then tearing down the obsidian farm. Alternatively, use 2 different strongholds and rebuild the portion of the desired farm as needed. Both farms are very easy to rebuild in the end dimension.
"Can you dupe concrete powder without converting it to concrete?" Chunk load the farm and start the concrete factory without placing the dummy block in front of the observer. Teleport to the obsidian platform and remove the overhead water source. Move most of the player inventory to a chest temporarily so that you can collect drops manually by standing near the middle of the platform. Occasionally move the drops into chests to make more room.
"Does this dupe dragon eggs or anvils or scaffolding?" No

NOTES
4:40 The redstone dust that activates the secondary piston can be a dot instead of a cross for a tiny improvement in lag.
10:14 The redstone dust in the corner (behind the repeater) can be replaced with a solid block.
13:15 The gravity blocks can be loaded in the same way as 8:31. You’ll need to remove any existing gravity block first, of course. Removing an existing gravity block might result in the item touching the portal, so that it teleports to the end and deletes the blocks over the platform. This is why it’s important to place the dummy block on the platform only after the new gravity blocks are loaded.
13:20 The dummy block can be glass if you don’t want to waste a slot in storage.
13:58 The duper modules must all be within the 3x3 entity processing chunks surrounding the chunk loader. Falling gravity blocks are actually entities, so they require processing for duping to work.
14:10 If you have another batch of gravity blocks to dupe, it's best to switch out the gravity blocks in the dupers before going to the end. Once on the platform, place the dummy block against the observer, and then collect your drops. Head back to the stronghold and flip the lever.
14:17 It’s normal to find a few unconverted concrete powder blocks in storage. It takes a moment after the farm starts for the instant water stream to form so that powder blocks can be converted to concrete.
15:03 It really is important to wait at least 2 seconds after pushing the button to place the dummy block in front of the observer.
15:15 Cover the clock to prevent accidental changes to repeater delays. Remove the blocks under the portal if you like, which can make it easier to switch gravity blocks.
15:25 An interesting duping configuration that requires only 4 observers.

REFERENCES

PAPER SERVERS
allow-unsafe-end-portal-teleportation set to true
allow-permanent-block-break-exploits set to true

[HenryZhoupokemon]

0:03 you know a vid is gonna be a banger when it starts with “Hi, this is ianxofour”

[artemis_furrson]

This farm is the epitome of "it looks quite simple but it is actually complex". The amount of obscure tech this farm relies on is insane.

[couzin]

Best narrated description of all Youtube Minecraft video makers.

[astupidlylongnamethatstoolong]

I dont even play minecraft anymore yet here I am, watching an Ian tutorial on a farm that I never really need in my playthroughs. Goes to show how his step by step videos are great.

[xcstfgo]

thank you bigbooty17 for all your great help

[skycatminepokie]

I swear I watch these videos all the way through, even if I don't plan on building it. That's how much I love your work.

[DMacDaddy]

IanXo4 upload = a mandatory month of playing minecraft!

[horse_testlcle_gaming]

What incredible timing!! I always use your farms, and right as I say I want to build a concrete factory you bless me with this! Keep it up brother, I will build this in my world for sure.

[sythanytx]

he came back when we needed him the most

[whatsminedisyours]

GOAT tutorials, no matter if the concept are simple or complex they are clearly conveyed and easy to understand. Thank you!

[benbovard]

I've been searching for this kind of farm for a long time and wouldn't you know, the goat himself makes a tutorial

[ej]

Yes been hoping for a Minecraft Elegance

[Battlefront]

BABY WAKE UP, NEW IANXOFOUR MINECRAFT TUTORIAL JUST DROPPED

[camerica]

Bros been cooking being the scenes, amazing video with outstanding information!

[PiEm]

The scaffolding as a redstone detector and signal transmitter is a game changer for me in my redstone buildings. Thank you ianxofour, you are the king of minecraft buildings

[HenryKogakumichi]

boy, another ian farm. it was fun seeing the development in the discord server before the video got released!

[poughkeepsieblue]

Very nice work. Glad to see another video. I had an idea for this, that i never followed through for, but im glad to see you perfected it nicely.
As always, nice explaination, and a great design and tutorial.
Thank you Ian.

[ItsaJuraff]

Absolutely incredible design. It leverages those new mechanics to solve every problem I’ve ever had with concrete factories, and I’ve built several of the larger ones before

[fladenbrot]

never thought instant fluid flow would have a use in such a way. amazing work!!!

[Nobdyikno]

New upload W
Another peak game changing farm