What to know
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Buck Capsule [A] is a 4★ HP healing medicine that restores 891 HP instantly.
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If equipped, it auto-triggers when an operator drops below 60% HP (up to 3 uses per battle).
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Your bottleneck is usually input flow (powders and bottles), so plan for steady farming plus a clean belt layout.
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A typical factory uses Depot Unloaders feeding processing units, then stores output in a Protocol Stash.
In Arknights: Endfield, crafting Purple-quality Meds Buck Capsule [A] is mostly about setting up a stable powder farm and then running a compact, powered production line into a Filling Unit. Once you have the right farms and a tidy assembly line, Buck Capsule [A] becomes a “set it up once, keep it stocked forever” kind of heal—especially if you like to automate your base instead of hand-crafting.
| Part | What you’re building | Why it matters |
|---|---|---|
| Powder supply | Buckflower powder + Sandleaf powder (farmed) | These are core inputs for your medicine production flow. |
| Bottle supply | Steel → steel bottles | If bottles lag behind, your Filling Unit can’t run at full pace. |
| Final assembly | Filling Unit → Buck Capsule [A] | This is the machine that outputs the finished purple medicine. |
| Output storage | Protocol Stash | Keeps your meds available without cluttering belts. |
How to set up the Buckflower and Sandleaf powder farms
A reliable powder farm is what makes Buck Capsule [A] feel effortless, because it keeps feeding your factory without you babysitting inputs. For this section, you’ll be looking to create something like this…
Step 1: Place the seeding/seed-picking unit
Place a seeding unit with space to run a conveyor on its left side, and orient it so belt flow goes left-to-right.
Step 2: Place the planting unit
Put the planting unit two blocks away from the seeding unit, with arrows facing left-to-right to match belt direction.
Step 3: Add a shredding unit and protocol stash
Place a shredding unit one block away (left-to-right flow).
Then place a Protocol Stash next to it so your farm output can be stored cleanly.
Step 4: Connect conveyors and close the loop
Run two conveyor belts across for the main line, then connect the planting unit back into the seeding unit so the farm feeds itself continuously.
Step 5: Seed it with the right starter item
Put Buckflower (or Buckflower seeds) into the seeding unit to start the Buckflower powder farm.
Repeat the same farm build for Sandleaf so you also generate Sandleaf powder.
Step 6: Power the farm
Place Electric Pylons so the units stay powered and the farm keeps producing without downtime.
How to build the Purple Buck Capsule [A] factory line
This layout is designed around feeding multiple raw inputs from your Depot into processing machines, then pushing finished Buck Capsule [A] into storage.
Step 1: Set up your Depot Unloaders
On your depot wall, place five Depot Unloaders in a row so you can feed multiple ingredient lines into the build.
Step 2: Place the processing machines in sequence
Place two Shredding Units to accept metal input.
A Grinding Unit in front of them.
Then a Refining Unit positioned to take the grinder output (leave the needed gap so belts route cleanly).
Step 3: Add the bottle-making machine
Place a Molding Unit (arrows right-to-left) to make bottles, because Buck Capsule [A] requires steel bottles as an input to the Filling Unit.
Step 4: Add the medicine assembly machine and storage
Place the Filling Unit with arrows left-to-right, then place a Protocol Stash at the end to store the finished Buck Capsule [A].
Step 5: Assign each Depot Unloader to an input
Configure unloaders so your lines supply (a) metal/ore for steel processing and (b) your farmed powders (Buckflower powder and Sandleaf powder) to the correct grinders where required.
Step 6: Belt routing to the Filling Unit
Route your belt outputs so the Filling Unit receives both required streams: steel bottles from the bottle line and the processed Buckflower powder stream from your grinding/refining chain.
Step 7: Power everything with a central pylon
Place an Electric Pylon where it covers the whole cluster (unloaders + machines + Filling Unit) so you don’t get random stoppages.
Step 8: Validate the output and tune for throughput
If production feels slow, the usual fix is increasing the bottle side (more steel bottle input capacity) so the Filling Unit stays fed and doesn’t idle.
Once it’s automated, Buck Capsule [A] becomes a dependable emergency heal: you can carry it for instant 891 HP recovery or equip it for automatic use under 60% HP during combat.
