Color Mixing de Bambu Studio: the new feature that changes multicolor 3D printing (complete guide)

Bambu Studio Color Mixing: the new function that changes multicolor 3D printing (complete guide)

Until now, 3D printing with custom colors was a real headache. You either bought 20 filament spools in different shades to have options, or you learned external software like HueForge with all its licensing restrictions. Bambu Lab has just changed the rules of the game with Color Mixing, a function integrated into Bambu Studio 2.5.3 that allows you to mix 2 or 3 filaments of the same type to create new colors or gradients directly from the slicer.

With the official Bambu Lab CMYK kit (cyan, magenta, yellow and black) and this new function, you can achieve hundreds of shades from just 4 spools. The community has been asking for something like this for years, and Bambu has launched it alongside the new Bambu Lab X2D. In this guide we explain what Color Mixing is, how it works step by step, which printers support it and how it differs from HueForge. And if you're looking for compatible PLA filaments to get started with Color Mixing, at Mr Resin you'll find the full range you need.

What is Color Mixing in Bambu Studio?

Color Mixing is a Bambu Studio 2.5.3 function that allows you to mix 2 or 3 filaments of the same type directly in the slicer to create new colors or gradients, without the need for external software or complicated manual processes. With the official Bambu Lab CMYK kit, hundreds of shades can be achieved from just 4 base spools.

The function was launched in April 2026 alongside the Bambu Lab X2D, although it is also compatible with older Bambu Lab 3D printers. It offers two operating modes: Normal, to create a new uniform color by mixing fixed proportions of 2 or 3 filaments, and Gradient, to generate smooth transitions between two colors along the height of the model.

How Color Mixing works step by step

Activating and using Color Mixing is very straightforward. Here is the complete process:

1. Update Bambu Studio to version 2.5.3 from the official Bambu Lab website or the software's own update option. Available for macOS and Windows.
2. Load your model into Bambu Studio as you normally would.
3. Open the filament settings in the left side panel.
4. Click "Add Mixed Filament", the new button that appears at the bottom of the filament list.
5. Select 2 or 3 filaments of the same type (for example, 3 spools of PLA in different colors).
6. Choose the mode: Normal (uniform color) or Gradient.
7. Adjust the proportions using the color bar (for 2 filaments) or the color triangle (for 3 filaments). You can also directly select one of the recommended colors shown below.
8. Apply the mixed filament to objects or parts of the model as you would with any other filament.
9. Slice and print the part. Bambu Lab recommends printing a small sample first to verify the actual color before launching the full print.

For best results with a 0.4 mm nozzle, Bambu Lab recommends a base layer height of 0.12 mm and a mixed layer height of 0.2 mm. Avoid extreme layer heights, as they can cause fractures in the filament fusion and degrade print quality.

Normal Mode vs Gradient Mode

The two Color Mixing modes solve different problems:

Normal Mode: create colors you don't have on a spool

This is the default mode and the most intuitive. You select 2 or 3 filaments, define the exact proportion of each (for example, 70% cyan + 30% yellow to get a teal green) and the result is a uniform color blended from the base ones.

It's ideal when you need a specific color that you don't have as an individual spool. Instead of buying a salmon pink spool, you can mix red, white and a touch of yellow. Instead of a specific purple, you mix red and blue in the exact proportion.

Gradient Mode: smooth transitions layer by layer

Gradient mode distributes the mix progressively along the height of the model. The result is a smooth transition between two colors, which was very difficult to achieve before without external scripts or manual layer-by-layer assignment.

It's ideal for vases with color gradients, decorative figures with sunset-style transitions, miniature bases with a sky effect, or any model where a gradual color change adds visual impact.

The Bambu Lab CMYK kit: why 4 colors are enough

The way Color Mixing works with the CMYK kit is based on the same principle used by ink printers on paper: the 4 primary colors (cyan, magenta, yellow and black) are sufficient to reproduce almost any visible color by changing their proportions.

Examples of colors achievable with the CMYK kit:

• Green = cyan + yellow
• Orange = yellow + magenta (a little)
• Red = magenta + yellow
• Purple = cyan + magenta
• Brown = cyan + magenta + yellow in adjusted proportions
• Grey = any color + black (a lot)
• Pastel pink = magenta (a little) + white (if you add it as a fourth filament)

The economic advantage is enormous. Instead of having 15 or 20 different spools taking up space and initial cost, with 4 spools you cover 90% of your color needs. And if you need a very specific shade, you generate it on the spot from the slicer.

Which 3D printers are compatible with Color Mixing?

Color Mixing works on all Bambu Lab 3D printers that support Bambu Studio 2.5.3, but performance varies greatly depending on the type of machine.

Optimal: multi-nozzle 3D printers (X2D and H2C)

3D printers with dual extruders such as the Bambu Lab X2D and the H2C are where Color Mixing unleashes its full potential. The dual-nozzle system allows switching between filaments with minimal purging, meaning less waste and greater speed. In addition, the new Filament Track Switch feature (also in Bambu Studio 2.5.3) allows routing the same filament to either of the two nozzles, further optimizing the process.

Compatible but not recommended: mono-nozzle 3D printers (A1, P1S, P2S, X1C)

On single-nozzle 3D printers (A1, A1 Mini, P1S, P1P, P2S and X1 Carbon), Color Mixing works technically, but each change in proportion forces the 3D printer to purge filament from the nozzle. In a complex print with many color changes, the waste can be considerable — between 30% and 80% additional filament consumed depending on the model's geometry.

For occasional use or models with few color changes, it remains a good option. For intensive and regular multicolor printing, a multi-nozzle 3D printer is advisable.

Limitations to keep in mind

Bambu Lab openly acknowledges the current limitations of Color Mixing. Knowing them before you start will save you frustration:

1. It only works well on nearly vertical walls. On slanted surfaces, top layers, or bottom layers, the effect can be unpredictable and the color may not match what was expected.
2. The color preview in the slicer is not yet 100% accurate. Bambu Lab recommends printing a small sample before launching a full print with a new color.
3. It only mixes filaments of the same type. You cannot mix PLA with PETG, for example. The materials have incompatible temperatures and behaviors.
4. High purging consumption on mono-nozzle 3D printers. Each change in proportion requires purging the nozzle, which in prints with many changes can double filament consumption.
5. Extreme layer heights can cause fractures at the fusion point. Follow the recommended settings of 0.12 mm base and 0.2 mm mixed for a 0.4 mm nozzle.

Filament Track Switch: the complementary feature

Alongside Color Mixing, Bambu Studio 2.5.3 introduces the Filament Track Switch, a feature designed specifically for multi-extruder 3D printers such as the X2D and the H2C. It allows a filament loaded in the AMS to be sent to either of the two nozzles as needed by the slicer.

In practice, this means that a single spool can be used alternately by both nozzles during the same print, minimizing purging when doing multicolor. It's an invisible improvement that significantly increases process efficiency and reduces filament waste.

Color Mixing vs HueForge: which one to use?

HueForge has long been the standard tool for advanced multicolor 3D printing. Both tools solve different problems, so the choice depends on what you want to do.

Use Color Mixing if: you want to generate colors you don't have on a spool, create smooth gradients, you have an X2D or H2C, you don't want to learn external software, or you plan to sell your prints without restrictions.

Use HueForge if: you want to convert photographs into multicolor prints, you need very precise layer-by-layer control, or you do advanced artistic filament painting. But keep in mind its license restrictions if you plan to commercialize your pieces.

They are not exactly direct competitors: Color Mixing is simpler and more accessible, HueForge is more powerful and specialized. Many makers end up using both depending on the project.

Practical use cases for Color Mixing

Here are some scenarios where Color Mixing truly shines:

Multicolor miniatures without 20 spools

For painting Warhammer, D&D, or decorative figurine miniatures, Color Mixing lets you achieve the exact color you need from just a few base filaments. Ideal for skin base layers, armor with specific tones, or small details you would normally paint by hand.

Vases and decorative objects with gradients

Gradient mode is perfect for creating smooth transitions on vertical pieces: a vase that shifts from blue to white simulating sky, a lamp with a sunset-style gradient, or a decorative piece with a watercolor effect. Previously, this required manual layer-by-layer programming.

Prototypes with exact brand colors

If you need to print a prototype with a brand's exact Pantone color, you can adjust proportions until you nail the right shade, without having to order a custom spool that costs 5 times more.

Miniature bases with environmental effects

Combining Color Mixing with post-processing techniques, you can create bases with terrain gradients, battle zones with a fresh blood effect, or bases with temperature transitions (fire to ice).

Personalized gifts with a specific color

Someone's exact favorite color, the shade of a room's wall, a business's brand color. Color Mixing lets you nail the right shade without buying 10 different spools to find the correct one.

What filaments to buy to get started with Color Mixing

The most straightforward option is the official Bambu Lab CMYK kit, but it's not the only way. You can build your own kit with 4 spools of PLA in cyan, magenta, yellow, and black from any compatible brand, and the results will be very similar. The important thing is that they're all the same material (don't mix PLA with PLA+, for example) and that they have good pigmentation to get clean colors when blended.

At Mr Resin you'll find a wide selection of PLA filaments compatible with Color Mixing from brands like Anycubic, Elegoo, and Winkle, with local stock and 24–48h shipping. If you have the X2D or another Bambu Lab 3D printer with AMS, we also carry filaments with RFID detection for direct integration.

To get started with Color Mixing, we recommend this minimum setup:

• Basic option (2 filaments): white + black. With this you can already create grey gradients and hundreds of neutral shades.
• Intermediate option (3 filaments): cyan + magenta + yellow. With the primary triad you can already generate greens, oranges, purples, and hundreds of secondary colors.
• Advanced option (4 filaments): the full CMYK kit (cyan, magenta, yellow, and black). Near-complete reproduction of the visible spectrum.
• Pro option (5 filaments): CMYK kit + white. Adds the ability to generate pastels and lighter colors with greater precision.

Final verdict: Color Mixing democratizes multicolor 3D printing

The arrival of Color Mixing in Bambu Studio is one of the most significant additions to the Bambu Lab ecosystem in recent months. It solves a real problem (the need to have many spools of specific colors) with an elegant, free, and integrated solution.

It doesn't replace HueForge for advanced filament painting uses, but it fills the middle ground perfectly: makers who want more color flexibility without investing in external software or learning complex tools. The combination of Color Mixing with multi-nozzle 3D printers (X2D and H2C) is where the feature unleashes its full potential, but even on mono-nozzle 3D printers it can be worth it for specific projects.

For the Spanish maker community, this is excellent news: one less technical barrier to creating pieces with custom colors, and one more reason to update to Bambu Studio 2.5.3 if you haven't done so yet.

Frequently asked questions about Color Mixing in Bambu Studio

What is Color Mixing in Bambu Studio?

Color Mixing is a feature in Bambu Studio 2.5.3 that allows you to blend 2 or 3 filaments of the same type directly in the slicer to create new colors or gradients. With the official Bambu Lab CMYK kit, hundreds of shades can be achieved from just 4 base spools (cyan, magenta, yellow, and black).

Which version of Bambu Studio includes Color Mixing?

Color Mixing is available from Bambu Studio 2.5.3 onwards, released in April 2026 alongside the Bambu Lab X2D. The update is available free of charge for macOS and Windows from the official Bambu Lab website. The Linux version is distributed via Flathub.

Does Color Mixing work on the Bambu Lab X1 Carbon?

Technically yes, Color Mixing is compatible with all Bambu Lab 3D printers that support Bambu Studio 2.5.3, including the X1 Carbon. However, as it is a mono-nozzle 3D printer, frequent color changes generate a lot of filament purging. Bambu Lab recommends using Color Mixing on multi-nozzle 3D printers such as the X2D or H2C to take full advantage of its potential.

Can I use Color Mixing on the A1 Mini or P1S?

Yes, Color Mixing works on the A1, A1 Mini, P1S and P1P, but since these are single-nozzle 3D printers, filament consumption during purging is high with each color change. For occasional use it's fine, but if you do multicolor printing regularly, it's worth considering a multi-nozzle 3D printer like the X2D or the H2C.

What filaments do I need to get started with Color Mixing?

You need at least 2 or 3 filaments of the same type and material (PLA with PLA, PETG with PETG). The most versatile option is the Bambu Lab CMYK kit: cyan, magenta, yellow and black. With these 4 base colors you can achieve hundreds of shades. You can also use compatible filaments from other brands as long as they are the same type of material.

What is the Bambu Lab CMYK kit?

The Bambu Lab CMYK kit is a set of 4 PLA filaments in cyan, magenta, yellow and black (key), designed specifically for the Color Mixing feature. It works on the same principle as ink printers on paper: with these 4 primary colors, hundreds of different shades can be generated by adjusting proportions.

What is the difference between Color Mixing and HueForge?

Color Mixing is built into Bambu Studio (free, no external software required), it is based on proportional blending of filaments to create uniform colors or gradients, and has no commercial use restrictions. HueForge is a standalone paid software, specialized in filament painting (converting images into layers of different colors), more powerful and flexible but with a steeper learning curve and license restrictions for the commercial sale of prints.

Can I mix PLA with PETG in Color Mixing?

No. Color Mixing only allows mixing filaments of the same type and material. You can mix PLA with PLA, PETG with PETG or ABS with ABS, but not different types with each other. Different materials have incompatible printing temperatures, adhesion and thermal behaviors that would cause the print to fail.

Does Color Mixing work on curved or inclined surfaces?

Color Mixing works best on nearly vertical walls. Bambu Lab does not recommend its use on inclined surfaces, top layers or bottom layers, because the effect can be unpredictable. For models with complex geometries, it's a good idea to first print a small sample to verify the result before launching the full print.

What is the Filament Track Switch?

Filament Track Switch is a new feature in Bambu Studio 2.5.3 for multi-extruder 3D printers like the X2D and H2C. It allows routing the same filament from the AMS to either of the two nozzles as needed by the slicer, significantly reducing unnecessary purging and improving multicolor printing efficiency.

How much filament does Color Mixing waste?

It depends on the type of 3D printer and the model design. On multi-nozzle 3D printers like the X2D, purging is minimal because both nozzles work alternately. On single-nozzle 3D printers (A1, P1S, X1C), purging is considerable every time the mixing ratio changes. As a reference, a complex multicolor print on a single-nozzle 3D printer can generate between 30% and 80% more waste than a single-color print.

Can gradients be created with Color Mixing?

Yes. The Gradient mode in Color Mixing allows you to create smooth transitions between two colors distributed along the height of the model. The result is a layer-by-layer gradient that previously could only be achieved through manual color assignment per layer or with external scripts. It works best on models with vertical walls and sufficient height.