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    2,055,424 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,392 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Slag n' Embers

    Mod

    Craft custom tools from parts and melt ores into new metals.

    B85/ 100
    • OverviewB
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.21.1
    • ModpacksIn 77
    • ReleasesLatest 29 Sep

    Download

    Slag-n-Embers-1.21.1-1.2b.jar

    Released 29 Sep 2026 · 5.6 MB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade B

    How grades work

    Strengths

    • Security checks passed
    • Public source code and issue tracker
    • Around for years

    Points lost

    • Releases in only 4 of the last 24 months−3 points
    • Some modpacks removed it−3 points
    • Releases replaced within 3 days to fix a problem−3 points
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      3 points lost24 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.4 weeks ago (29 Sep 2026) 12 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.21.1 on NeoForge. 65% of the 995 popular NeoForge mods updated in the last 6 months also have files for 1.21.1. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 4 of the last 24 months 3 / 6

    • Stability

      6 points lost16 / 22
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.12 of the 65 modpacks with two or more versions removed it in a later one (18%) See the 12 modpacks7 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.2 of its 8 releases in 2 years needed a quick fix (25%) See the 2 releases4 / 7
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · LopyLuna/Slag-n-Embers 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · LopyLuna/Slag-n-Embers 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.59,686 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.13 months, 8 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file for recent Minecraft versions. See Security
    Total85 / 100

    60.6 of the 71 points that apply = 85 out of 100. The points above are rounded to whole numbers.

    Images

    • Smeltery
    • Op Paxel

    About

    Slag n’ Embers is a metallurgy and modular-tool mod centered on melting materials, alloying metals, and crafting custom tools from interchangeable parts. Melt ores and other materials in Melters, then create alloys such as Rose Gold using a Brick Forge or Crucible; the system also includes molten materials such as Rose Quartz, Echo, and Glowstone. Crucibles and Melters support advanced heating, while casting molds, tables, and basins let you shape molten materials, and modular tools are assembled in the Smithing Table. Tool materials, parts, and modular types have traits and can be incompatible with one another, adding choices to tool construction; modular types include Farmer’s Delight knives. The mod also offers generated melting and casting recipes and additional material types for mod compatibility, with Create support that lets Crucibles work on contraptions and Spouts fill Casting Tables or Basins when configured.

    Written from Modrinth . How we write it

    In-game changes

    Changes the game's code in 7 areas: Rendering and graphicsChanges 4 game code files in this area: drawing mobs, items, particles and textures on screen., Inventory and itemsChanges 4 game code files in this area: items, chests and other containers, crafting and enchanting., PlayerChanges 2 game code files in this area: your character: movement, abilities, hunger and controls., Chunk loading and storageChanges 1 game code file in this area: how the game loads, tracks, saves and unloads chunks., World renderingChanges 1 game code file in this area: drawing the terrain, sky, clouds and weather., Mobs and their behaviorChanges 1 game code file in this area: mobs, animals, villagers, projectiles and how they move and act. and Game data and resourcesChanges 1 game code file in this area: recipes, tags, advancements, language files and other game data..

    Libraries packed inside it change 13 more game code files: Flywheel and Ponder.

    Adds 45 blocks, 45 items, 1,381 recipes, 5 sounds and 1 key binding.

    Counted from the names and data files in the mod, so the list may not be complete.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 29
    Create: Copycats+ACreate AeronauticsBCreate: ConnectedALithiumAChippedC

    Details

    Creator
    LopyLuna
    License
    MIT Code AND ARR Assets
    Downloads
    60K
    Created
    6 Oct 2025
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Discord

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    What it can do on your computer

    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · The latest file checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      1 latest file, for a recent version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.
      Nothing declared about your system outside the game.
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    We read its code without running it: it contacts no web address while you play.

    Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.

    How we checked · Its one file read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of its one file, for recent Minecraft versions. See each file in Releases
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.
      Nothing declared about crash reports, usage data or advertisements.

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its texts, files, images and sounds and found none.

    We have not read its code history yet.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.

    How we checked · 6 places read
    • Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.
      No AI content or AI features declared.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found
      2 of 16 changelogs read
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
      801 images read
    • Sounds in its filesThe tags of the sound files in the files you download, where some AI music tools write their name.
      Nothing found
      10 sounds read
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      1,425 code files read

    Compatibility

    See all 8 files
    NeoForge
    1.2126.126.2

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Needed in your game and on the server, or you cannot join.
    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.
    CreateBCreate AeronauticsBSableB
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.It has no file for Minecraft versions newer than 1.21.1. Many recently updated mods still support 1.21.1.

    Related projects

    Projects that need Slag n' Embers to work.

    ProjectTypeDownloadsGrade
    Slag n' Embers - Create CompatDMod13K downloadsSmeltery Required! [Slag n' Embers]CData pack254 downloads

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    30150
    Oct 2024: 0 modpacksNov 2024: 0 modpacksDec 2024: 0 modpacksJan 2025: 0 modpacksFeb 2025: 0 modpacksMar 2025: 0 modpacksApr 2025: 0 modpacksMay 2025: 0 modpacksJun 2025: 0 modpacksJul 2025: 0 modpacksAug 2025: 0 modpacksSep 2025: 0 modpacksOct 2025: 0 modpacksNov 2025: 3 modpacksDec 2025: 4 modpacksJan 2026: 2 modpacksFeb 2026: 5 modpacksMar 2026: 5 modpacksApr 2026: 2 modpacksMay 2026: 7 modpacksJun 2026: 12 modpacksJul 2026: 24 modpacksAug 2026: 23 modpacksSep 2026: 16 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 20240
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    Jan 20262
    Feb 20265
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    Apr 20262
    May 20267
    Jun 202612
    Jul 202624
    Aug 202623
    Sep 202616

    More modpacks put it in their new versions than a year ago: 14 a month now, 0 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..

    77 modpacks include Slag n' Embers in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    BM - Exosphere 2 Lite25K downloadslast version with it 8 Oct 2026The Warborn Realms11K downloadslast version with it 4 Aug 2026Create: Reatomized!4.5K downloadslast version with it 2 Aug 2026HeroesOfMultiverse4.4K downloadslast version with it 13 Sep 2026Chronicles: Tharidia2.8K downloadslast version with it 9 Mar 2026Venti RPG2.5K downloadslast version with it 20 Oct 2026CreateSMP Polska2.4K downloadslast version with it 1 Aug 2026Lumiere Project Tensura Modpack2.4K downloadslast version with it 2 Sep 2026Realms Of Reverie2.1K downloadslast version with it 20 Oct 2026Java Overhaul1.9K downloadslast version with it 25 Jul 2026
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Slag n' Embers. Share: how many of the modpacks with Slag n' Embers also have that mod.

    ProjectTypeShareGrade
    Create: Copycats+AModin 68% of the modpacks with Slag n' EmbersCreate AeronauticsBModin 66% of the modpacks with Slag n' EmbersCreate: ConnectedAModin 57% of the modpacks with Slag n' EmbersLithiumAModin 57% of the modpacks with Slag n' EmbersChippedCModin 55% of the modpacks with Slag n' EmbersCreate: Enchantment IndustryAModin 53% of the modpacks with Slag n' EmbersAmendmentsAModin 53% of the modpacks with Slag n' EmbersHandcraftedCModin 49% of the modpacks with Slag n' EmbersCreate Slice & DiceAModin 48% of the modpacks with Slag n' EmbersCreate DecoBModin 48% of the modpacks with Slag n' Embers
    1 to 10 of 29123

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    1.21.1·NeoForge1.2b1.2b · Slag-n-Embers-1.21.1-1.2b.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    8 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1The latest file for its Minecraft version and loader·NeoForge1.2b1.2b · Slag-n-Embers-1.21.1-1.2b.jar (main file)·29 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.6 MB
    1.21.1·NeoForge1.2a1.2a · Slag-n-Embers-1.21.1-1.2a.jar (main file)·28 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.6 MB
    1.21.1·NeoForge1.1a1.1a · Slag-n-Embers-1.21.1-1.1a.jar (main file)·20 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 3.6 MB
    1.21.1·NeoForge1.1c-snapshot1.1c-snapshot · Slag-n-Embers-1.21.1-1.1c-snapshot.jar (main file)Alpha·16 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Alpha · 3.6 MB
    1.21.1·NeoForge1.1-snapshot1.1-snapshot · Slag-n-Embers-1.21.1-1.1-snapshot.jar (main file)Alpha·4 Nov 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Alpha · 3.2 MB
    1.21.1·NeoForge1.0c1.0c · Slag-n-Embers-1.21.1-1.0.2.jar (main file)Beta·12 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 3.4 MB
    1.21.1·NeoForge1.0b1.0b · Slag-n-Embers-1.21.1-1.0.1.jar (main file)Beta·11 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 2.6 MB
    1.21.1·NeoForge1.01.0 · Slag-n-Embers-1.21.1-1.0.jar (main file)Beta·6 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 2.5 MB

    Quick fixes

    In the last 2 years, 2 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 3 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.2

    • Slag-n-Embers-1.21.1-1.2b29 Sep 2026…Create now use the ingot cast Fixed Brick Forge, Melting, Casting, &…
    • Slag-n-Embers-1.21.1-1.0c12 Oct 2025Fixed Server side issues Materials Stats can now be…