How to Build a Brass Mixer – Create Wiki (1.21.1)

Brass needs a heated basin: the Mechanical Mixer stirs the Basin below it while a Blaze Burner heats it from underneath. The mixer also needs at least 30 RPM — four times what a Water Wheel gives — so two pairs of large and small cogwheels double the speed twice. On our test server the mixer turned at 32 RPM, and 2 copper and 2 zinc ingots became 4 brass ingots within 300 ticks after one piece of coal went into the burner.

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Place the Blaze Burner (with its blaze inside) on the ground and the Basin on top of it. The burner heats the basin once it gets fuel.
Four blocks up, place the Water Wheel with its axle pointing east–west and a row of stone north and south of it as the floor of a water channel.
The wheel turns at 8 RPM, but the Mechanical Mixer needs at least 30. A Large Cogwheel on the wheel's axle drives a small Cogwheel one block down and one south: going from large to small doubles the speed (16 RPM). A second Large Cogwheel on that axle and a small one up and south of it double it again (32 RPM).
A Gearbox takes the rotation down into a Cogwheel lying flat. The Mechanical Mixer next to it meshes with that cogwheel like another cogwheel — it cannot be driven by a shaft. The mixer sits two blocks above the basin, with one block of air between them.
Glass on both sides and at both ends of the channel keeps the water in.
Pour one water source at the north end of the channel. Right-click the Blaze Burner with coal or charcoal so it is heated, then put copper and zinc ingots into the basin: the mixer makes brass, and the ingots collect in the basin's output.

Materials 10 kinds · 27 items

Basinstep 1×1
Blaze Burnerstep 1×1
Stonestep 2×4
Water Wheelstep 2×1
Cogwheelstep 3×3
Large Cogwheelstep 3×2
Gearboxstep 4×1
Mechanical Mixerstep 4×1
Glassstep 5×12
Waterstep 6×1

Layer planLayer 1 is the bottom · north is up · 6 × 6 × 7 blocks

The layer plan appears with the 3D view.

Water wheel, two gear stages (8 → 16 → 32 RPM), gearbox and cogwheel, mixer, basin and blaze burner.Textures, models and item names © simibubi and the Create contributors. Vanilla textures © Mojang.

How it works

The wheel turns a Large Cogwheel. A small Cogwheel placed diagonally next to it turns twice as fast: 16 RPM.
A second large cogwheel on the small one's axle drives another small cogwheel: 32 RPM.
A Gearbox turns the rotation downwards into a cogwheel lying flat. The mixer has no shaft: it meshes with that cogwheel from the side.
One block of air separates the mixer from the basin, like the press and the depot.
Right-click the blaze burner with coal or charcoal: it becomes heated for a while. A Blaze Cake makes it superheated for recipes that need even more heat.

any Copper Ingot + any Zinc Ingot → 2 × Brass Ingot

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Getting a blaze burner

Craft an Empty Blaze Burner from iron sheets and netherrack and use it on a blaze in the Nether: the blaze moves in. The iron sheets come from the How to Build a Mechanical Press.

4 × any Iron Sheet + any Netherrack → Empty Blaze Burner

5 × Andesite Alloy → Basin

Cogwheel + Andesite Casing + Whisk → Mechanical Mixer

2 × Andesite Alloy + 5 × any Iron Sheet → Whisk

Shaft + 2 × any Oak Planks (#minecraft:planks) → Large Cogwheel

Everything the mixer makes

Andesite + any Iron Nugget → Andesite Alloy

Andesite + any Zinc Nugget → Andesite Alloy

any Copper Ingot + any Zinc Ingot → 2 × Brass Ingot

4 × any Bamboo (#create:pulpifiable) + Water 250 mB → Pulp

Milk250 mB

Chocolate250 mB

Sugar + Cocoa Beans + Milk 250 mB → Chocolate 250 mB

Chocolate250 mB

Bar of Chocolate → Chocolate 250 mB

All 11 Mixing recipes in the Mechanical Mixer

Recipes, names and numbers are read from the mod files of Create 6.0.10 for Minecraft 1.21.1 (NeoForge). Not affiliated with the mod authors, Mojang or Microsoft.