Multi Step Recipe with Mekanism | latcord | Page 1

upbeat vector Apr 2, 2026, 3:26 PM

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I am looking to create a recipe chain that can use a single item and progress through a series of machines to create an output, similar to the create sequenced assembly. i expected to use NBT data to control recipes but that seems like its not being respected by Mek. I have added the files do you can see where im going with this. What am i doing wrong? can i use Create Sequenced Assembly to complete this with Mek machines? is there something else i would be better off doing instead?

📎 step_1.json 📎 step_2.json 📎 step_3.json 📎 step_4.json 📎 step_5.json

tulip pondBOT Apr 2, 2026, 3:26 PM

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Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!

eternal domeBOT Apr 2, 2026, 3:26 PM

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Paste version of step_1.json, step_2.json, step_3.json, step_4.json, step_5.json from @upbeat vector

agile wolf Apr 2, 2026, 3:32 PM

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these are all datapack recipes and have nothing to do with KJS

upbeat vector Apr 2, 2026, 3:32 PM

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GL_Facepalm

agile wolf Apr 2, 2026, 3:32 PM

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you need to ask Mekanism or check the minecraft wiki

upbeat vector Apr 2, 2026, 3:34 PM

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agile wolf these are all datapack recipes and have nothing to do with KJS

you can just use these recipes as is if you place them in the the kubeJS folder kubejs/data/sgcommunity_pack/recipe/item/mosfet_steps/recipe.json

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the problem im having is understanding how to generate the individual steps without overwriting or just allowing all interchangeably

agile wolf Apr 2, 2026, 3:36 PM

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i know how KJS works. i said what i said
you do with that information as you will.

upbeat vector Apr 2, 2026, 3:41 PM

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LUL_devcord so if i come back with this exact same thing in one file instead of 5 (using JS instead of JSON) you will be more willing to assist me. got it... gimme like 6 hours while i figure out how to rewrite everything ive made (200+ files) to accommodate that

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nvm, i just used AI to rewrite this shit quick and dirty so i can at least understand what the fuck im doing wrong. or if its even possible...

ServerEvents.recipes(event => {

  const WAFER = 'sgcommunity_pack:incomplete_mosfet_wafer'

  function waferSNBT(step, text) {
    return `{display:{Lore:['"${text}"']},step:${step}}`
  }

  // Step 1 → Step 2
  event.recipes.mekanism.injecting({
    item_input: { item: "sgcommunity_pack:silicon_wafer", count: 1 },
    chemical_input: { amount: 1, chemical: "mekanism:silicon" },
    output: { id: WAFER, nbt: waferSNBT(2, "Step 2: Inject Water Vapor (2000mb)") }
  })

  // Step 2 → Step 3
  event.recipes.mekanism.injecting({
    item_input: { item: WAFER, count: 1, nbt: waferSNBT(2, "Step 2: Inject Water Vapor (2000mb)") },
    chemical_input: { amount: 2000, tag: "mekanism:water_vapor" },
    output: { id: WAFER, nbt: waferSNBT(3, "Step 3: Etch Wafer") }
  })

  // Step 3 → Step 4
  event.recipes.mekanism.injecting({
    item_input: { item: WAFER, count: 1, nbt: waferSNBT(3, "Step 3: Etch Wafer") },
    chemical_input: { amount: 400, chemical: "mekanism:hydrofluoric_acid" },
    output: { id: WAFER, nbt: waferSNBT(4, "Step 4: Inject Boron") }
  })

  // Step 4 → Step 5
  event.recipes.mekanism.injecting({
    item_input: { item: WAFER, count: 1, nbt: waferSNBT(4, "Step 4: Inject Boron") },
    chemical_input: { amount: 400, chemical: "mekanism:boron_trifluoride" },
    output: { id: WAFER, nbt: waferSNBT(5, "Step 5: Inject Phosphorus") }
  })

  // Step 5 → Final MOSFET Wafer
  event.recipes.mekanism.injecting({
    item_input: { item: WAFER, count: 1, nbt: waferSNBT(5, "Step 5: Inject Phosphorus") },
    chemical_input: { amount: 200, chemical: "mekanism:phosphorus" },
    output: { id: "sgcommunity_pack:mosfet_wafer" }
  })

})

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Should I be using NBT data to mek control recipes? should i use something else?

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is there a better way? im open to any ideas on how this is supposed to work

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im not keen on making separate items for each recipe and i would like to control the input/output of each recipe using an NBT like system... instead of just doing multiple items and seperate recipes

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(but if thats the final result i will deal with it)

upbeat vector Apr 2, 2026, 4:43 PM

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agile wolf i know how KJS works. i said what i said you do with that information as you wil...

i hope i didnt offend

upbeat vector Apr 2, 2026, 8:06 PM

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I also posted all this in the Mek discord to see if anyone there can help

upbeat vector Apr 3, 2026, 5:09 AM

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I could use some assistance if anyone wants to chime in. I still havent figured out a better way...

fickle ore Apr 3, 2026, 5:42 AM

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upbeat vector is there a better way? im open to any ideas on how this is supposed to work

just use intermediary items?

edgy rivet Apr 3, 2026, 12:59 PM

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Well

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Your output is using id

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Mek outputs use items

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Here I’ll summarize

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The idea is possible, but the script is using the wrong Mekanism recipe format. The main issues are that the output is written with id instead of item, the NBT item input is in the wrong format, the injecting keys may not match the exact 1.20.1 Mekanism schema, and mekanism:silicon is probably invalid there because silicon is an item, not a chemical. So what needs to be fixed is the recipe structure itself: use the correct output key, convert the item input to proper NBT ingredient format, and match the exact field names/types your Mekanism version expects.
@upbeat vector

upbeat vector Apr 3, 2026, 1:11 PM

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edgy rivet The idea is possible, but the script is using the wrong Mekanism recipe format. ...

I am trying to rebuild a 1.20.1 script is for 1.21.1

The 1.20 script is over engineered and very difficult to read and translate to 1.21

upbeat vector Apr 3, 2026, 1:12 PM

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fickle ore just use intermediary items?

There are five recipe chains similar to this and this is the smallest one I would rather not create 100 new items and clog up JEI with the same thing over and over again...

edgy rivet Apr 3, 2026, 1:13 PM

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Use this

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ServerEvents.recipes(event => {
const BASE_WAFER = 'sgcommunity_pack:incomplete_mosfet_wafer'

function waferComponents(step, text) {
return {
'minecraft:custom_data': {
sgcommunity_pack: {
mosfet_step: step
}
},
'minecraft:lore': [
{ text: text, color: 'gray' }
]
}
}

function waferInput(step, text) {
return {
ingredient: {
type: 'neoforge:components',
items: [BASE_WAFER],
components: waferComponents(step, text),
strict: false
},
amount: 1
}
}

function waferOutput(step, text) {
return {
id: BASE_WAFER,
count: 1,
components: waferComponents(step, text)
}
}

// Step 1 -> Step 2
event.custom({
type: 'mekanism:injecting',
item_input: {
ingredient: { item: 'sgcommunity_pack:silicon_wafer' },
amount: 1
},
chemical_input: {
tag: 'mekanism:water_vapor',
amount: 2000
},
output: waferOutput(2, 'Step 2: Inject Water Vapor (2000 mB)')
})

// Step 2 -> Step 3
event.custom({
type: 'mekanism:injecting',
item_input: waferInput(2, 'Step 2: Inject Water Vapor (2000 mB)'),
chemical_input: {
chemical: 'mekanism:hydrofluoric_acid',
amount: 400
},
output: waferOutput(3, 'Step 3: Etch Wafer')
})

// Step 3 -> Step 4
event.custom({
type: 'mekanism:injecting',
item_input: waferInput(3, 'Step 3: Etch Wafer'),
chemical_input: {
chemical: 'mekanism:boron_trifluoride',
amount: 400
},
output: waferOutput(4, 'Step 4: Inject Boron')
})

// Step 4 -> Step 5
event.custom({
type: 'mekanism:injecting',
item_input: waferInput(4, 'Step 4: Inject Boron'),
chemical_input: {
chemical: 'mekanism:phosphorus',
amount: 200
},
output: waferOutput(5, 'Step 5: Inject Phosphorus')
})

// Step 5 -> Final
event.custom({
type: 'mekanism:injecting',
item_input: waferInput(5, 'Step 5: Inject Phosphorus'),
chemical_input: {
chemical: 'mekanism:phosphorus',
amount: 200
},
output: {
id: 'sgcommunity_pack:mosfet_wafer',
count: 1
}
})
})

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@upbeat vector

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Actually

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Hold on that’s mainly just patched let me send you a clean one

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ServerEvents.recipes(event => {
const INCOMPLETE = 'sgcommunity_pack:incomplete_mosfet_wafer'
const FINAL = 'sgcommunity_pack:mosfet_wafer'
const START = 'sgcommunity_pack:silicon_wafer'

function waferComponents(step, label) {
return {
'minecraft:custom_data': {
sgcommunity_pack: {
mosfet_step: step,
mosfet_label: label
}
}
}
}

function stagedWaferIngredient(step, label) {
return {
ingredient: {
type: 'neoforge:components',
items: [INCOMPLETE],
components: waferComponents(step, label),
strict: false
},
amount: 1
}
}

function stagedWaferOutput(step, label) {
return {
item: INCOMPLETE,
count: 1,
components: waferComponents(step, label)
}
}

// Step 1 -> Step 2: Inject Water Vapor
event.custom({
type: 'mekanism:injecting',
item_input: {
ingredient: { item: START },
amount: 1
},
chemical_input: {
tag: 'mekanism:water_vapor',
amount: 2000
},
output: stagedWaferOutput(2, 'Step 2: Inject Water Vapor (2000 mB)')
})

// Step 2 -> Step 3: Etch Wafer
event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferIngredient(2, 'Step 2: Inject Water Vapor (2000 mB)'),
chemical_input: {
chemical: 'mekanism:hydrofluoric_acid',
amount: 400
},
output: stagedWaferOutput(3, 'Step 3: Etch Wafer')
})

// Step 3 -> Step 4: Inject Boron
event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferIngredient(3, 'Step 3: Etch Wafer'),
chemical_input: {
chemical: 'mekanism:boron_trifluoride',
amount: 400
},
output: stagedWaferOutput(4, 'Step 4: Inject Boron')
})

// Step 4 -> Final MOSFET Wafer: Inject Phosphorus
event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferIngredient(4, 'Step 4: Inject Boron'),
chemical_input: {
chemical: 'mekanism:phosphorus',
amount: 200
},
output: {
item: FINAL,
count: 1
}
})
})

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use this and let me know

upbeat vector Apr 3, 2026, 1:17 PM

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testing now, one min

edgy rivet Apr 3, 2026, 1:17 PM

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Okay

upbeat vector Apr 3, 2026, 1:19 PM

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I have created a silicon chemical (actually several chemicals) that is what was in the first recipe. i will add that back myself shortly after i verify that this even works

upbeat vector Apr 3, 2026, 1:20 PM

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edgy rivet ServerEvents.recipes(event => { const INCOMPLETE = 'sgcommunity_pack:incomplet...

[09:19:35] [ERROR] ! server_scripts:mosfet_chain.js#52: Failed to create custom recipe from json {"type":"mekanism:injecting","item_input":{"ingredient":{"type":"neoforge:components","items":["sgcommunity_pack:incomplete_mosfet_wafer"],"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":2,"mosfet_label":"Step 2: Inject Water Vapor (2000 mB)"}}},"strict":false},"amount":1},"chemical_input":{"chemical":"mekanism:hydrofluoric_acid","amount":400},"output":{"item":"sgcommunity_pack:incomplete_mosfet_wafer","count":1,"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":3,"mosfet_label":"Step 3: Etch Wafer"}}}}}: Failed to read required component 'output: item_stack' - java.lang.IllegalStateException: No key id in MapLike[{"item":"sgcommunity_pack:incomplete_mosfet_wafer","count":1,"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":3,"mosfet_label":"Step 3: Etch Wafer"}}}}]
[09:19:35] [ERROR] ! server_scripts:mosfet_chain.js#63: Failed to create custom recipe from json {"type":"mekanism:injecting","item_input":{"ingredient":{"type":"neoforge:components","items":["sgcommunity_pack:incomplete_mosfet_wafer"],"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":3,"mosfet_label":"Step 3: Etch Wafer"}}},"strict":false},"amount":1},"chemical_input":{"chemical":"mekanism:boron_trifluoride","amount":400},"output":{"item":"sgcommunity_pack:incomplete_mosfet_wafer","count":1,"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":4,"mosfet_label":"Step 4: Inject Boron"}}}}}: Failed to read required component 'output: item_stack' - java.lang.IllegalStateException: No key id in MapLike[{"item":"sgcommunity_pack:incomplete_mosfet_wafer","count":1,"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":4,"mosfet_label":"Step 4: Inject Boron"}}}}]
[09:19:35] [ERROR] ! server_scripts:mosfet_chain.js#74: Failed to create custom recipe from json {"type":"mekanism:injecting","item_input":{"ingredient":{"type":"neoforge:components","items":["sgcommunity_pack:incomplete_mosfet_wafer"],"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":4,"mosfet_label":"Step 4: Inject Boron"}}},"strict":false},"amount":1},"chemical_input":{"chemical":"mekanism:phosphorus","amount":200},"output":{"item":"sgcommunity_pack:mosfet_wafer","count":1}}: Failed to read required component 'output: item_stack' - java.lang.IllegalStateException: No key id in MapLike[{"item":"sgcommunity_pack:mosfet_wafer","count":1}]

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Failed to read required component 'output: item_stack' - java.lang.IllegalStateException: No key id this error means the output needs id not item

edgy rivet Apr 3, 2026, 1:29 PM

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Fuh and I just left my crib

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Um hold on

#

ServerEvents.recipes(event => {
const INCOMPLETE = 'sgcommunity_pack:incomplete_mosfet_wafer'
const FINAL = 'sgcommunity_pack:mosfet_wafer'
const START = 'sgcommunity_pack:silicon_wafer'

function waferComponents(step, label) {
return {
'minecraft:custom_data': {
sgcommunity_pack: {
mosfet_step: step,
mosfet_label: label
}
}
}
}

function stagedWaferIngredient(step, label) {
return {
ingredient: {
type: 'neoforge:components',
items: [INCOMPLETE],
components: waferComponents(step, label),
strict: false
},
amount: 1
}
}

function stagedWaferOutput(step, label) {
return {
id: INCOMPLETE,
count: 1,
components: waferComponents(step, label)
}
}

event.custom({
type: 'mekanism:injecting',
item_input: {
ingredient: {
item: START
},
amount: 1
},
chemical_input: {
tag: 'mekanism:water_vapor',
amount: 2000
},
output: stagedWaferOutput(2, 'Step 2: Inject Water Vapor (2000 mB)')
})

event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferIngredient(2, 'Step 2: Inject Water Vapor (2000 mB)'),
chemical_input: {
chemical: 'mekanism:hydrofluoric_acid',
amount: 400
},
output: stagedWaferOutput(3, 'Step 3: Etch Wafer')
})

event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferIngredient(3, 'Step 3: Etch Wafer'),
chemical_input: {
chemical: 'mekanism:boron_trifluoride',
amount: 400
},
output: stagedWaferOutput(4, 'Step 4: Inject Boron')
})

event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferIngredient(4, 'Step 4: Inject Boron'),
chemical_input: {
chemical: 'mekanism:phosphorus',
amount: 200
},
output: {
id: FINAL,
count: 1
}
})
})

#

let me know as I’m doing this from my phone atp

edgy rivet Apr 3, 2026, 2:00 PM

#

@upbeat vector

upbeat vector Apr 3, 2026, 2:04 PM

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edgy rivet Fuh and I just left my crib

Same lol, I'll be home again to test it in 45 min or so

edgy rivet Apr 3, 2026, 2:05 PM

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Gotchu

upbeat vector Apr 3, 2026, 2:05 PM

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Strike that, 2 hours

edgy rivet Apr 3, 2026, 2:55 PM

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upbeat vector Strike that, 2 hours

No worries I’m at work right now anyways so that’s fine with me

upbeat vector Apr 3, 2026, 4:32 PM

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edgy rivet ServerEvents.recipes(event => { const INCOMPLETE = 'sgcommunity_pack:incomplet...

Failed to read required component 'item_input: flat_sized_ingredient' - java.lang.IllegalStateException: No key tag

[12:26:11] [ERROR] ! server_scripts:mosfet_chain.js#37: Failed to create custom recipe from json {"type":"mekanism:injecting","item_input":{"ingredient":{"item":"sgcommunity_pack:silicon_wafer"},"amount":1},"chemical_input":{"tag":"mekanism:water_vapor","amount":2000},"output":{"id":"sgcommunity_pack:incomplete_mosfet_wafer","count":1,"components":{"minecraft:custom_data":{"sgcommunity_pack":{"mosfet_step":2,"mosfet_label":"Step 2: Inject Water Vapor (2000 mB)"}}}}}: Failed to read required component 'item_input: flat_sized_ingredient' - java.lang.IllegalStateException: No key tag in MapLike[{"ingredient":{"item":"sgcommunity_pack:silicon_wafer"},"amount":1}]; No key item in MapLike[{"ingredient":{"item":"sgcommunity_pack:silicon_wafer"},"amount":1}]

edgy rivet Apr 3, 2026, 4:33 PM

#

Item input shape is wrong

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Two seconds

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We fixed the output alr

edgy rivet Apr 3, 2026, 4:34 PM

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upbeat vector `Failed to read required component 'item_input: flat_sized_ingredient' - java.la...

Replace it with this and let me know, I kinda gotta do these 1 by 1

ServerEvents.recipes(event => {
const INCOMPLETE = 'sgcommunity_pack:incomplete_mosfet_wafer'
const FINAL = 'sgcommunity_pack:mosfet_wafer'
const START = 'sgcommunity_pack:silicon_wafer'

function waferComponents(step, label) {
return {
'minecraft:custom_data': {
sgcommunity_pack: {
mosfet_step: step,
mosfet_label: label
}
}
}
}

function stagedWaferInput(step, label) {
return {
type: 'neoforge:components',
items: [INCOMPLETE],
components: waferComponents(step, label),
strict: false,
amount: 1
}
}

function stagedWaferOutput(step, label) {
return {
id: INCOMPLETE,
count: 1,
components: waferComponents(step, label)
}
}

event.custom({
type: 'mekanism:injecting',
item_input: {
item: START,
amount: 1
},
chemical_input: {
tag: 'mekanism:water_vapor',
amount: 2000
},
output: stagedWaferOutput(2, 'Step 2: Inject Water Vapor (2000 mB)')
})

event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferInput(2, 'Step 2: Inject Water Vapor (2000 mB)'),
chemical_input: {
chemical: 'mekanism:hydrofluoric_acid',
amount: 400
},
output: stagedWaferOutput(3, 'Step 3: Etch Wafer')
})

event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferInput(3, 'Step 3: Etch Wafer'),
chemical_input: {
chemical: 'mekanism:boron_trifluoride',
amount: 400
},
output: stagedWaferOutput(4, 'Step 4: Inject Boron')
})

event.custom({
type: 'mekanism:injecting',
item_input: stagedWaferInput(4, 'Step 4: Inject Boron'),
chemical_input: {
chemical: 'mekanism:phosphorus',
amount: 200
},
output: {
id: FINAL,
count: 1
}
})
})

upbeat vector Apr 3, 2026, 4:53 PM

#

edgy rivet Replace it with this and let me know, I kinda gotta do these 1 by 1 ServerEven...

IT WORKS! now i need to add back in step 1, the silicon chemical... the only problem im encountering now is the fact that the machines have a base of 210 chem storage and im pretty sure there is a boolean that allows per tick operation that needs to be toggled

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"per_tick_usage":true

edgy rivet Apr 3, 2026, 4:59 PM

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Prefect! Yep you can use this for your step 1 for example

#

event.custom({
type: 'mekanism:injecting',
item_input: {
item: START,
amount: 1
},
chemical_input: {
chemical: 'mekanism:silicon',
amount: 2000
},
per_tick_usage: true,
output: stagedWaferOutput(1, 'Step 1: Inject Silicon (2000 mB)')
})

#

But yea practical read is is:
• per_tick_usage: true = better for a recipe that should draw the chemical gradually while the machine runs
• per_tick_usage: false = better when the machine should only consume the chemical in one shot at completion

upbeat vector Apr 3, 2026, 5:00 PM

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thanks man, this is a huge step toward moving to 1.21.1, now i can start applying this setup to the other 50 recipes

edgy rivet Apr 3, 2026, 5:00 PM

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Then your water vapor step would become step 1 ->2

upbeat vector Apr 3, 2026, 5:00 PM

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yes

edgy rivet Apr 3, 2026, 5:00 PM

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upbeat vector thanks man, this is a huge step toward moving to 1.21.1, now i can start applyin...

My pleasure bro! I’m glad we got this figured out for you and best of luck with the rest of your progress!

upbeat vector Apr 3, 2026, 5:01 PM

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oh

edgy rivet Apr 3, 2026, 5:01 PM

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Feel free to friend and dm me if you ever need any future help, apologies for how long it took I had to do this from my phone xd

upbeat vector Apr 3, 2026, 5:01 PM

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one last thing

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the subtext isnt showing up, lemme get screenshots of the old way it was done

edgy rivet Apr 3, 2026, 5:03 PM

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Okay

upbeat vector Apr 3, 2026, 5:04 PM

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edgy rivet Feel free to friend and dm me if you ever need any future help, apologies for ho...

you good dude, i would never have been able to do this from my phone lol

the last thing i need to fix is this:

edgy rivet Apr 3, 2026, 5:05 PM

#

Use this in your output component right now we have it storing only Minecraft:custom_data

function waferComponents(step, label) {
return {
'minecraft:custom_data': {
sgcommunity_pack: {
mosfet_step: step,
mosfet_label: label
}
},
'minecraft:lore': [
{
text: label,
color: 'gray',
italic: false
}
]
}
}

upbeat vector Apr 3, 2026, 5:05 PM

#

the steps dont show up in the new version

edgy rivet Apr 3, 2026, 5:05 PM

#

Here I’ll apply it and send you the new script

#

Lore added back