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Sledgehammer Mod 1.12.2 Download

Sledgehammer Mod 1.12.2 utilizes SpongePowered/Mixin (github.com/SpongePowered/Mixin) to patch issues in Minecraft and Forge mods.


  • Configurable
  • Compatible with Forge, SpongeForge, and SpongeVanilla

Client Patches:

  • Fix https://github.com/BluSunrize/ImmersiveEngineering/issues/3474
  • Disable SearchTree reloading (Speeds up server connection process)
  • Increase the maximum length for a WorldType name in SPacketJoinGame
  • Common Patches
  • Prevent crashes due to invalid translation keys
  • Make LazyLoad Thread-safe (Should fix MC-68381)
  • Server Patches
  • Print a single message instead of a stacktrace for advancement errors
  • Don’t reload Advancements on World Load (Fixes Achievement issues on SkyFactory 4)
  • Fix NullPointerException in BiomeProvider::findBiomePosition
  • Prevent Grass turning into Dirt
  • Prevent Ice turning into Water
  • Prevent Totemic from changing the weather
  • Chunk Saving
  • Alert players when a chunk fails to save
  • Remove all Entities and TileEntities from chunks that fail to save
  • Remove all blacklisted items from chunks that fail to save
  • Generate a crash report and safely stops the server if a chunk fails to save
  • Reduce Network usage by postponing flush
  • Fix https://github.com/SpongePowered/SpongeCommon/issues/2013
  • Redirect inventory debugging messages added by Sponge
  • Fix MC-134716 – Player kick exploit
  • Prevent or delete any items that attempt to teleport across dimensions
  • Limit books to 50 pages with 255 characters for each
  • Fix potential deadlock on shutdown
  • Prevent ConcurrentModificationException in PlayerChunkMap
  • Fix Item spawn packet exploit with ProjectRed
  • Fix https://github.com/P3pp3rF1y/Reliquary/issues/370
  • Redirect Ruins debugging messages
  • Fix https://github.com/Daveyx0/PrimitiveMobs/issues/59 (Sponge only)
  • Force permission check for OP based commands (Sponge only)
  • Fix Misty World portal issues (Sponge only)
  • Fix https://github.com/An-Sar/PrimalCore/issues/210 (Fixed in 0.6.56 according to Dev) (Sponge only)
  • Prevent movement outside of the world border (Sponge only)
  • Prevent sending blank death messages (Sponge only)

How to install:

  1. Make sure you have already installed Minecraft Forge.
  2. Locate the minecraft application folder.
    • On windows open Run from the start menu, type %appdata% and click Run.
    • On mac open finder, hold down ALT and click Go then Library in the top menu bar. Open the folder Application Support and look for Minecraft.
  3. Place the mod you have just downloaded (.jar file) into the Mods folder.
  4. When you launch Minecraft and click the mods button you should now see the mod is installed.

Sledgehammer Mod 1.12.2Download Links:

For Minecraft 1.12.2

Download from Server 1 – Download from Server 2