Casting Obsidian
by BitLink
Casting Obsidian lets players right-click sand that sits above a block of obsidian to gather the obsidian out of the sand, and adds a small hopper-based automation option for it.
What it does
Casting Obsidian is a NeoForge game mechanics mod for Minecraft 1.21.1 that changes how obsidian can be obtained from sand. A player right-clicks the sand, and the obsidian beneath it can be pulled out by hand. A hopper set under the sand block can take part in the process, so a little automation is possible. Both sides need the mod, as it runs as client and server, and it is published for NeoForge 1.21.1 only. The code is released under All rights reserved and is not open source.
Key features
Right-click obsidian gathering
Right-clicking sand that is surrounded by a block of obsidian pulls the obsidian out by hand.
Hopper automation
A hopper placed below the sand block can collect the obsidian, allowing a small amount of automation.
Single-version build
The mod has one release, 1.0.0, for NeoForge on Minecraft 1.21.1, published on 2026-05-20.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Renewable Gravel and Sand is a server-required mod for Fabric, Forge, NeoForge and Quilt, targeting 1.21.7 and under All rights reserved, so it covers a different version and loader set. Sand Physics is a NeoForge mod for 1.21.1 that is open source under the MIT License, so it can be read and modified freely.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Casting Obsidian | NeoForge | 1.21.1 | Client and server | 2026-05-20 |
| Renewable Gravel and Sand | Fabric, Forge, NeoForge and Quilt | 1.21.7 | Server required, client optional | 2025-10-09 |
| Sand Physics | NeoForge | 1.21.1 | Client and server | 2026-07-15 |
Questions
Does Casting Obsidian need to be installed on the server?
In the catalog
Casting Obsidian is one of 29,952 Game mechanics mods on ModsFinder, and one of 12,140 Game mechanics mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
Tired of mining 5ever for obsidian? This mod allows you to cast your obsidian in sand, which you can just pull out with your hands! Be sure to let it cool first! The mod checks for sand being on each side and one below, but will allow you to place a hopper below for a somewhat automated functionality.
Official listing
- Modrinth page
- modrinth.com/mod/casting-obsidian
- Owner
- BitLink
- Published
- 2026-05-20
- Updated on Modrinth
- 2026-05-20
- Facts verified
- 2026-10-15