Arknights: Endfield Guide | How to Make Auto Buck Capsule Farm

Here’s a guide on how to make an Auto Buck Capsule Farm in Arknights: Endfield.

Game Guide by Ragib Rawnak on Feb 22, 2026

Making Buck Capsule A is a huge job that needs a fully developed outpost to work right. This guide shows you how to build a high-speed factory that can make one capsule every ten seconds, or six capsules every minute.

You can make a self-sustaining loop that makes a lot of money by managing outposts by coordinating eight Ferrium Ore outputs with farms just for Sandleaf and Buckflower.

Arknights: Endfield, Guide, How to Make Auto Buck Capsule Farm

Working with Ferrium and Steel Bottles

To start, move your core to the top left corner of the base to make the most of the space you have to build. In the top right corner, put eight Depot Unloaders set to Ferrium Ore in a pattern of two, a gap, four, a gap, and two.

Each unloader sends its contents to a Refining Unit, which then sends the contents to a Shredding Unit to make Ferrium Powder. The powder then moves into four Grinding Units that are facing down.

The output from these Grinding Units goes to Refining Units that make steel. You need to put Molding Units on this to shape the metal into Steel Bottles so that it can be used as packaging.

You need to send two separate lines of Steel into your Filling Unit at the bottom of the build because you need a lot of bottles. Use bridges to get over existing conveyor lines so that the bottles can get to the final assembly area without stopping.

Arknights: Endfield, Guide, How to Make Auto Buck Capsule Farm

Setting up the Sandleaf Farms

This build needs two different Sandleaf farms to make enough powder for all the machines. Using a Planting Unit, a Seed Picking Unit, and another Planting Unit, make a loop on the right side.

Don't forget to turn off the water intake for these units. To start the cycle, put 50 Sandleaf in the picker. In the middle, a Shredding Unit will turn the crops into Sandleaf Powder, which will then be sent to the first three Grinding Units.

Make a copy of this farm on the left side of the factory. The Sandleaf Powder for the other grinders in Arknights: Endfield will come from this second farm.

You can make sure that every machine in the chain has the right materials to keep the production of Buck Capsule A going as fast as possible by splitting the output of these shredders and using bridges.

Arknights: Endfield, Guide, How to Make Auto Buck Capsule Farm

Growing Buckflower and Filling It Up

You need to build two special Buckflower farms at the bottom left of your base. These farms work in a similar way to the others, but they only grow Buckflower Powder.

Put 50 Buckflower in each Seed Picking Unit. The extra plants go to Shredding Units, which then send two output lines to each of the last Grinding Units.

The Filling Unit is where the last step happens. This machine takes the Steel Bottles and the processed powders to finish the Buck Capsule A in Arknights: Endfield.

After they are made, the capsules are stored in a Protocol Stash. At refugee camps, these capsules sell for 70 stock bills each, which makes them a great way for your outpost to make money.

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