ModsJava
Tinkers Construct Unofficial Port Mod (1.21.1) – Cast Molten Metal Weapons
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
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Tinkers Construct Unofficial Port Mod brings classic tool crafting, smelteries, and metal casting mechanics to modern game versions. Players can combine distinct parts to craft custom weapons, tools, and shields with special traits. The mod also lets you melt down ores, mix metal alloys, and connect with technical setups like Create machinery.
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Features:
- Assembles custom weapons, shields, and tools from interchangeable heads, handles, and bindings.
- Melts raw ores into liquid metals inside multi-block smelteries.
- Pours molten metals into casts to forge specific tool parts and ingots.
- Mixes molten materials together to create unique alloys such as Manyullyn, Slimesteel, and Pig Iron.
- Adds special slime islands, congealed slime blocks, and slime mobs in the Overworld, Nether, and End.
- Applies custom modifiers and upgrades to your gear to give special combat or mining buffs.
- Connects directly with Create pipes, fluid tanks, and gear setups for automated liquid handling.
- Works alongside space and aeronautics mods for building factories anywhere.
Screenshots:


Tinkers Construct Unofficial Port Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 525615.mcaddon
- Download size: 23.8 MB
- Download link checked 13 Oct 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.