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TNT crafter: crafts by itself from a supply chest (autocrafter)
crafts a TNT block from every 5 gunpowder and 4 sand · 31 blocks
Crafts a TNT block from every 5 gunpowder and 4 sand by itself: fill its supply chests and every full set is crafted into its output chest (18.8 crafts a minute). A partial set waits, without jamming, until the rest arrives.
the first craft after 4 s · fits in 5×3×5
Try it
The view shows the crafter as built, without items. In the game, fill each of its supply chests with its ingredient (5 gunpowder and 4 sand make one craft): every full set becomes a TNT block in the output chest.
How this design does it: Gunpowder and sand must go into the crafter in turn, because TNT's pattern alternates them and a crafter fills its slots in order.
Build it
Download .litematic Download the design as text
The .litematic opens in Litematica (Minecraft 26.3): every block of the design in one region. The text file is the same build written as plain text, block by block.
After building it, put a chest where the view shows each of its 2 supplies (gunpowder and sand) and one at its output: none of them is in the download or its block count. One of its crafters has all 9 slots disabled: the download keeps them; building it by hand, disable the same slots by clicking them in the crafter's screen.
Blocks used: comparator copper bulb crafter hopper observer redstone wire repeater stone
Details: how it works, measurements and properties
In depth
crafts by itself: hoppers fill its crafter from a supply chest, and every full recipe is crafted into the output chest
How to try it
The view shows the crafter as built, with its chests and no items. Drag to look around, pinch or scroll to zoom. Its numbers are in the measurements below.
Measurements
| metric | value | what it means |
|---|---|---|
| crafts/min | 18.8 | crafts a minute at the steady rate, fed at hopper speed |
| first craft | by 4 s | game ticks from the first item in until the first craft |
| crafts | 21 (2 waiting sets checked) | crafts counted, every one exact (and how many partial sets it was left waiting with, then completed) |
| hoppers awake | 1 | hoppers left unlocked at rest: each one looks for items every game tick (lag on busy servers) |
| recipe class | multi | 3x3: a recipe that fills the whole crafting grid; 2x2: a smaller one (the crafter's other slots disabled) |
| supply | items.gunpowder + items.sand | the port its items come in by |
| bill | 10 iron, 7 quartz, 27 redstone | what its blocks cost to craft: iron, quartz, redstone, slime |
Notes from its designer
Crafts a TNT block from every 5 gunpowder and 4 sand. Gunpowder and sand must go into the crafter in turn, because TNT's pattern alternates them and a crafter fills its slots in order. A comparator reads how many slots are filled; each change flips two copper bulbs, one locking the sand hopper while the count is even, the other locking the gunpowder hopper while it is odd. The second bulb also pulses the crafter, which crafts once all nine slots are full; an extra comparator keeps the sand hopper locked from the ninth item until the bulbs have flipped back after the craft.
Properties
| Study | Auto-crafters |
|---|---|
| Kind | TNT crafter: crafts by itself from a supply chest (autocrafter) |
| Blocks placed | 31 (not counting the chests the view adds) |
| Box | 5×3×5 (75 blocks of space) |
| Made of (the blocks that change state) | comparator, copper bulb, crafter, hopper, observer, redstone wire, repeater, stone |
| Inputs / outputs | no input / OUT |
| Design file | tnt-a |
The design file
Design file (43 lines)
# Auto-crafter: crafts a TNT block from every 5 gunpowder and 4 sand · 31 blocks
# https://vjeux.github.io/redstonepedia/circuits/crafter/tnt-a.html
name: tnt-a
circuit: crafter tnt
port items.gunpowder: 0 2 0
port items.sand: -1 1 0
port output: 0 -1 0
origin: -2 0 -2
palette:
M minecraft:crafter[crafting=false,orientation=down_north,triggered=false]
C minecraft:crafter[crafting=false,orientation=north_up,triggered=false]
G minecraft:hopper[enabled=true,facing=down]
H minecraft:hopper[enabled=false,facing=east]
A minecraft:comparator[facing=south,mode=compare,powered=false]
K minecraft:comparator[facing=north,mode=compare,powered=false]
J minecraft:comparator[facing=east,mode=compare,powered=false]
N minecraft:comparator[facing=north,mode=compare,powered=false]
E minecraft:observer[facing=east,powered=false]
W minecraft:observer[facing=west,powered=false]
L minecraft:waxed_copper_bulb[lit=true,powered=false]
U minecraft:waxed_copper_bulb[lit=false,powered=false]
R minecraft:repeater[delay=2,facing=south,locked=false,powered=false]
S minecraft:stone
r minecraft:redstone_wire[east=side,north=side,power=0,south=side,west=side]
layer -1:
..S..
S.S.S
.....
.SSS.
.SS..
layer 0:
LErWU
N.A.N
SHMSS
.RKJC
.rr..
layer 1:
.....
.....
..Grr
.....
.....
nbt: 2 0 1 {disabled_slots:[I;0,1,2,3,4,5,6,7,8]}