Sledgehammer
by LXGaming
Sledgehammer is a Forge optimization and patch mod for Minecraft 1.12.2 that fixes several known issues in Forge and vanilla code.
What it does
Sledgehammer applies a set of targeted fixes using the SpongePowered Mixin library, which patches issues in Minecraft and Forge mods at runtime. Its listed changes include a fix for a reported issue numbered 3474, a change that skips reloading the search tree to speed up joining a server, and a larger allowed length for world type names in the join game packet. It also makes LazyLoad thread-safe, which addresses MC-68381.
The mod is listed under Optimization, with Utility as a secondary category. It can be installed on a client or a server, and neither side needs it, so players on a server running it do not have to add it themselves. It is also available for Sponge, and the author notes that the jar contains a -sponge build with dependencies already present in a Sponge environment. Compatibility is stated for Forge, SpongeForge and SpongeVanilla.
Sledgehammer is open source under the Apache License 2.0 and has public source code and an issue tracker. Its only published game version is 1.12.2, and the latest Forge file is 1.12.2-2.0.26, released on 2024-04-15.
Key features
Mixin-based patches
Patches are applied through SpongePowered Mixin, so changes to Minecraft and Forge code are made without editing the original sources.
Faster server joining
Reloading of the search tree is disabled, which the author says speeds up the server connection process.
Longer world type names
The maximum length of a world type name in the SPacketJoinGame packet is increased.
Thread-safe LazyLoad
The LazyLoad utility is made thread-safe, with a fix for MC-68381 included.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Servers with a reported issue 3474
Server owners who run into the issue covered by fix 3474 can include the listed patch.
SpongeForge servers
Servers that run SpongeForge or SpongeVanilla can use the Sponge build, which carries its dependencies.
Who it’s for: Server owners and players on Minecraft 1.12.2 who run Forge, SpongeForge or SpongeVanilla and want the listed patches applied.
Questions
Does Sledgehammer have to be installed on both sides?
Which server platforms does Sledgehammer support?
Which game versions does Sledgehammer cover?
In the catalog
Sledgehammer is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 2,920 mods support Minecraft 1.12.2.
More from LXGaming
Similar mods
What the author says
Sledgehammer utilises SpongePowered/Mixin to patch issues in Minecraft and Forge mods The jar containing '-sponge' does not contain these dependencies as they are already present in a Sponge environment.
Official listing
- Modrinth page
- modrinth.com/mod/sledgehammer
- Owner
- LXGaming
- Published
- 2022-11-16
- Updated on Modrinth
- 2024-04-15
- Facts verified
- 2026-10-15