Bambu Studio Color Mixing: The New Feature Changing Multicolor 3D Printing (Complete Guide)

Bambu Studio Color Mixing: The New Feature Changing Multicolor 3D Printing (Complete Guide)

Until now, 3D printing in custom colors was a real headache. You'd buy 20 spools of filament in different shades just to have options, or you'd learn external software like HueForge and deal with all its licensing restrictions. Bambu Lab has just changed the game with Color Mixing, a feature built into Bambu Studio 2.5.3 that lets you blend 2 or 3 filaments of the same type to create new colors or gradients directly inside the slicer.

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

What Is Color Mixing in Bambu Studio?

Color Mixing is a Bambu Studio 2.5.3 feature that lets you blend 2 or 3 filaments of the same type directly in the slicer to create new colors or gradients, with no external software or complicated manual processes required. Using Bambu Lab's official CMYK kit, you can achieve hundreds of shades from just 4 base spools.

The feature launched in April 2026 alongside the Bambu Lab X2D, though it's also compatible with older Bambu Lab printers. It offers two operating modes: Normal, for creating a solid new color by mixing fixed ratios of 2 or 3 filaments, and Gradient, for generating smooth transitions between two colors across the height of a model.

How Color Mixing Works: Step by Step

Activating and using Color Mixing is straightforward. Here's the complete walkthrough:

1. Update Bambu Studio to version 2.5.3 from the official Bambu Lab website or through the software's built-in 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 your mode: Normal (solid color) or Gradient.
7. Adjust the ratios using the color bar (for 2 filaments) or the color triangle (for 3 filaments). You can also pick directly from the suggested colors shown below.
8. Apply the mixed filament to objects or parts of your model just as you would with any other filament.
9. Slice and print your part. Bambu Lab recommends printing a small test piece first to verify the actual color before running 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 straightforward. You select 2 or 3 filaments, define the exact ratio of each (for example, 70% cyan + 30% yellow to get a teal green), and the result is a uniform color blended from the base filaments.

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 particular purple, you blend red and blue in the exact ratio you need.

Gradient Mode: smooth color transitions layer by layer

Gradient Mode distributes the blend progressively across the height of the model. The result is a smooth transition between two colors — something that 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 shift adds visual impact.

Bambu Lab's CMYK kit: why 4 colors are enough

Color Mixing with the CMYK kit works on the same principle as inkjet printers on paper: the 4 primary colors (cyan, magenta, yellow, and black) are enough to reproduce almost any visible color by adjusting their ratios.

Examples of colors achievable with the CMYK kit:

• Green = cyan + yellow
• Orange = yellow + magenta (small amount)
• Red = magenta + yellow
• Purple = cyan + magenta
• Brown = cyan + magenta + yellow in adjusted proportions
• Grey = any colour + black (large amount)
• Pastel pink = magenta (small amount) + white (if added as a fourth filament)

The cost savings are significant. Instead of keeping 15 or 20 different spools taking up space and requiring upfront investment, just 4 spools cover 90% of your colour needs. And if you need a very specific shade, you can generate it on demand directly from the slicer.

Which printers support Color Mixing?

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

Best performance: multi-nozzle printers (X2D and H2C)

Printers with dual extruders such as the Bambu Lab X2D and the H2C are where Color Mixing truly shines. The dual-nozzle system allows switching between filaments with minimal purging, meaning less waste and faster prints. The new Filament Track Switch feature (also in Bambu Studio 2.5.3) lets you route the same filament to either nozzle as needed, further streamlining the process.

Compatible but not ideal: single-nozzle printers (A1, P1S, P2S, X1C)

On single-nozzle printers (A1, A1 Mini, P1S, P1P, P2S and X1 Carbon), Color Mixing works technically, but every ratio change requires the printer to purge filament from the nozzle. On complex prints with frequent colour changes, waste can add up considerably — anywhere from 30% to 80% extra filament consumed depending on the model geometry.

For occasional use or models with few colour changes, it's still a solid option. For intensive, regular multicolour printing, a multi-nozzle printer is the better choice.

Limitations to keep in mind

Bambu Lab openly acknowledges the current limitations of Color Mixing. Knowing these upfront will save you a lot of frustration:

1. Works best on near-vertical walls. On angled surfaces, top layers or bottom layers, results can be unpredictable and colours may not match what you expect.
2. Colour preview in the slicer is not yet 100% accurate. Bambu Lab recommends printing a small test piece before committing to a full print with a new colour mix.
3. Only mixes filaments of the same material type. You cannot mix PLA with PETG, for example — different materials have incompatible temperatures and printing behaviours.
4. High purge consumption on single-nozzle printers. Every ratio change requires purging the nozzle, which on prints with many colour transitions can effectively double filament consumption.
5. Extreme layer heights can cause bonding failures at the blend point. Stick to the recommended settings of 0.12 mm base layer and 0.2 mm blended layer for a 0.4 mm nozzle.

Filament Track Switch: the complementary feature

Alongside Color Mixing, Bambu Studio 2.5.3 introduces Filament Track Switch, a feature designed specifically for multi-extruder printers like the X2D and H2C. It allows a single filament loaded in the AMS to be routed to either nozzle, depending on what the slicer requires.

In practice, this means a single spool can be used alternately by both nozzles during the same print, keeping purging to a minimum when doing multicolour prints. It's an under-the-radar improvement, but one that significantly boosts process efficiency and cuts down on filament waste.

Color Mixing vs HueForge: Which Should You Use?

HueForge has long been the go-to tool for advanced multicolour 3D printing. Both tools solve different problems, so the right choice really depends on what you're trying to achieve.

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

Use HueForge if: you want to convert photos into multicolour prints, need very precise layer-by-layer control, or do advanced artistic filament painting. Just bear in mind the licence restrictions if you're planning to sell your parts commercially.

They're not really direct competitors: Color Mixing is simpler and more accessible, while HueForge is more powerful and specialised. Many makers end up using both depending on the project.

Practical Use Cases for Color Mixing

Here are some scenarios where Color Mixing really comes into its own:

Multicolour Miniatures Without 20 Spools

For painting Warhammer, D&D, or decorative figures, Color Mixing lets you nail the exact colour you need from just a few base filaments. Perfect for base coating skin tones, armour with specific shades, or small details you'd normally hand-paint.

Vases and Decorative Objects with Gradients

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

Prototypes with Exact Brand Colours

If you need to print a prototype in a brand's exact Pantone colour, you can fine-tune the proportions until you hit the right tone — no need to order a custom spool that costs five times as much.

Miniature Bases with Environmental Effects

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

Personalised Gifts in Specific Colours

Someone's exact favourite colour, the shade of paint on a bedroom wall, a company's brand colour. Color Mixing lets you get the tone spot-on without buying 10 different spools just to find the right 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 to go. You can put together your own kit with 4 spools of PLA in cyan, magenta, yellow, and black from any compatible brand and get very similar results. The key is to stick to the same material type (don't mix PLA with PLA+, for example) and choose filaments with strong pigmentation for clean, accurate color blending.

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 printer with AMS, we also carry filaments with RFID detection for seamless integration.

To get started with Color Mixing, here's the setup we recommend:

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

Final verdict: Color Mixing makes multicolor printing accessible to everyone

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 stock many spools in specific colors — with an elegant, free, and fully integrated solution.

It doesn't replace HueForge for advanced filament painting workflows, but it fills the middle ground perfectly: makers who want more color flexibility without investing in external software or learning complex new tools. Color Mixing really shines when paired with multi-nozzle printers like the X2D and H2C, though it can still be worth using on single-nozzle printers for specific projects.

For the maker community, this is great news: one less technical barrier to creating parts with custom colors, and one more reason to update to Bambu Studio 2.5.3 if you haven't already.

Frequently asked questions about Color Mixing in Bambu Studio

What is Color Mixing in Bambu Studio?

Color Mixing is a feature introduced in Bambu Studio 2.5.3 that lets you 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, you can achieve hundreds of shades 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 as a free download 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 printers that support Bambu Studio 2.5.3, including the X1 Carbon. However, since the X1 Carbon is a single-nozzle printer, frequent color changes produce a lot of filament purging. Bambu Lab recommends using Color Mixing on multi-nozzle printers like the X2D or H2C to get the most out of the feature.

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 printers, filament consumption during purging is high with every color change. For occasional use it's fine, but if you're doing multicolor prints regularly, it's worth considering a multi-nozzle printer like the X2D or H2C.

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

You'll 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're the same material type.

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 inkjet printers: using these 4 primary colors, you can generate hundreds of different shades by adjusting the ratios.

What's the difference between Color Mixing and HueForge?

Color Mixing is built directly into Bambu Studio (free, no external software needed), works by blending filament proportions to create solid colors or gradients, and has no commercial use restrictions. HueForge is a standalone paid software tool specialized in filament painting (converting images into layers of different colors) — more powerful and flexible, but with a steeper learning curve and licensing restrictions for selling printed pieces commercially.

Can I mix PLA with PETG in Color Mixing?

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

Does Color Mixing work on curved or angled surfaces?

Color Mixing works best on nearly vertical walls. Bambu Lab doesn't recommend using it on sloped surfaces, top layers, or bottom layers, as the effect can be unpredictable. For models with complex geometry, it's a good idea to print a small test piece first to check the result before committing to the full print.

What is Filament Track Switch?

Filament Track Switch is a new feature in Bambu Studio 2.5.3 for multi-extruder printers like the X2D and H2C. It allows the slicer to route a single filament from the AMS to either nozzle as needed, significantly reducing unnecessary purging and improving multicolor printing efficiency.

How much filament does Color Mixing waste?

It depends on the printer type and model design. On multi-nozzle printers like the X2D, purging is minimal since both nozzles alternate. On single-nozzle printers (A1, P1S, X1C), purging is substantial every time the blend ratio changes. As a rough guide, a complex multicolor print on a single-nozzle printer can generate between 30% and 80% more waste than a single-color print.

Can you create gradients with Color Mixing?

Yes. Color Mixing's Gradient mode lets you create smooth transitions between two colors spread across the height of the model. The result is a layer-by-layer gradient that previously could only be achieved through manual per-layer color assignment or external scripts. It works best on models with vertical walls and enough height to show the transition.