BlockMixer
Every seasoned builder knows the rhythm: place a block, scroll to the next one, place it, scroll again. It works, but it breaks your flow, especially on large projects where you cycle through the same handful of materials thousands of times. BlockMixer is a lightweight Fabric mod that solves this problem by automating your hotbar selection, letting you focus on the build instead of your inventory.
What BlockMixer Does
BlockMixer is a quality-of-life mod designed to ease the building process. The concept is simple but effective. After you place a block, the mod automatically switches your character's selection to a random slot from the ones you have bound to it. Instead of manually scrolling through your hotbar, you keep placing blocks while BlockMixer rotates through your chosen materials for you.
This makes it ideal for texturing walls, creating natural-looking terrain, or mixing stone variants in a floor pattern. If you have ever wanted a randomized palette without constantly pressing number keys, this mod delivers exactly that.
Key Features
Mixing Modes
BlockMixer offers several mixing modes so you can control how random the selection really is:
- Default: a purely random selection of your bound slots.
- Non-repeating: a slot cannot be selected twice in a row.
- Non-repeating [2]: a slot cannot be repeated three times in a row.
These modes are useful when you want variety without awkward clusters of the same block appearing side by side.
Slot Ratio
The slot ratio setting lets you assign priority to specific slots. By setting the ratio to 10 for one slot and 1 for another, the first slot will be selected far more often. This is perfect for builds where one material should dominate while others appear as accents.
Toggle Mod Option
You can temporarily disable BlockMixer without clearing your bound slots. Press Sneak plus the toggle hotbar slot key (Shift plus B by default) and all bound slots will be highlighted with a red indicator. Press the same combination again to re-enable the mod.
How to Install BlockMixer for Minecraft
BlockMixer is a Fabric mod, so you will need the Fabric loader installed first. The mod supports modern Minecraft releases across the 1.19 and 1.20 branches, and it requires Fabric API to run. Cloth Config API and Mod Menu are optional but recommended, since Mod Menu gives you access to the in-game settings screen where you can change mixing modes.
To install it manually, place the downloaded jar file into your mods folder alongside Fabric API, then launch the game using your Fabric profile. If you prefer a smoother route, the foxygame.net launcher bundles BlockMixer into a curated add-on catalog, so you can add it with a single click and skip the manual file juggling entirely.
How to Use BlockMixer
Binding slots is quick. Click B while hovering over a hotbar slot to bind or unbind it, and the bound slot will be highlighted with a green indicator. Repeat this for every block you want in the rotation. Once you have two or more slots bound, start placing blocks and watch the mod handle the switching.
To change mixing modes, open the mod settings through Mod Menu. To adjust the slot ratio, press the right bracket key to increase it and the left bracket key to decrease it. Both keys can be rebound if they conflict with other mods.
Why Builders Keep It Installed
BlockMixer does not add new blocks or change world generation. It simply removes a repetitive action that slows down creative and survival building alike. For players who enjoy terraforming, decorating, or working on large-scale projects, that small change adds up to hours saved over time.
If you are ready to try it, download BlockMixer and pair it with Fabric API on your preferred Minecraft version. Whether you install it manually or through a launcher, the setup takes minutes and the payoff lasts for every build that follows.