Multicolor 3D Printing Guide: AMS Systems and Alternatives in 2026

A multicolor 3D printing system is, at its core, a mechanism that allows an FDM printer to use multiple 3D printing filaments in a single print job, creating full-color objects without any manual post-processing or painting.

In my experience, it's the most straightforward way to bring complex models to life. You assign colors in your slicer software, hit print, and the machine handles all the material changes automatically. It's a genuine game-changer that saves you hours of painting.

What exactly is a multicolor system for a 3D printer?

A multicolor 3D printing system is the hardware that enables your FDM printer to switch between colors or materials mid-print. Here at Mr Resin, we can tell you that in 2026 there are options for every budget and skill level, making multicolor 3D printing more accessible than ever for the maker community.

The concept is simple: instead of relying on a single spool, the printer has access to several. When the design calls for a color change, the system retracts the current filament, cuts it, sets it aside, and loads the new color into the extruder. This process, known as purging, repeats until the print is complete.

Having tested quite a few technologies, each one has its own quirks. The most common systems you'll come across are:

• Automatic Material Systems (AMS): Popularized by Bambu Lab. These are external units that manage 4 filaments (and you can chain multiple units together to reach 16). Their biggest strength is ease of use and seamless integration.
• Multi-Material Units (MMU): Prusa's answer to multicolor printing. It's an add-on you install on their printers that lets you handle up to 5 filaments. Just be prepared to set it up and dial it in with some patience.
• Dual Extrusion (IDEX): These are the top-of-the-line printers with two fully independent print heads, each with its own filament. They're fantastic for two-color prints or using soluble support materials — and best of all, they produce almost no wasted material.

For a quick overview, I've put together the table below. At a glance, you'll see exactly what each system brings to the table.

Here's the thing: for me, the real game-changer isn't the technology itself — it's how incredibly accessible it's become. Not long ago, multicolor printing was a genuine nightmare. Now, with systems like the AMS, it's almost as easy as pressing a button.

How does a Bambu Lab AMS system work?

A Bambu Lab AMS system works as an automated filament manager that selects, loads, cuts, and purges the exact color the 3D printer needs at any given moment. In my experience, it's the closest thing to plug-and-play magic I've ever seen in multicolor 3D printing.

The AMS is a unit that holds up to four spools. Each slot has motorized rollers that feed the filament through a PTFE tube. When the slicer (Bambu Studio) calls for a color change, the system retracts the current filament, cuts it precisely, and loads the next one — all on its own. You can even print with up to 16 colors by chaining multiple units together. Absolutely wild! 🤯

The magic behind the scenes

The real trick is the constant communication between the AMS and the printer. The standard AMS (compatible with the X1 and P1 series) uses RFID tags on Bambu Lab spools. As soon as you load a spool, the system scans it and instantly knows the material type, color, and how much is left. No more guesswork!

What if you use third-party filaments? No problem — just enter the details manually. Another feature I've really appreciated is that it doubles as a dry storage box, with space for desiccant packs, keeping your filaments protected from moisture.

A tip from Mr Resin: This is especially handy for hygroscopic materials. Your more sensitive PLA filaments and TPU will thank you for it.

AMS vs. AMS Lite: which one is right for you?

Bambu Lab offers two versions. The right choice depends on your printer:

• Standard AMS: Enclosed design, compatible with the X1 and P1 series. It's robust, protects your filament, and it's the only version you can daisy-chain (up to 4 units for 16 colors). This is the professional-grade option.

• AMS Lite: The open, budget-friendly version designed for the A1 series. Filaments are exposed to the air, so there's no moisture protection. The upside is that it's much more affordable.

The decision is straightforward: it comes down to which printer you have. If you're thinking about getting a new one, I'd recommend checking out our in-depth review of the Bambu Lab P2S.

What are the alternatives to the AMS system?

The AMS isn't the only way to print in multiple colors — alternatives include MMU units, dual extrusion, and third-party solutions. As your go-to maker buddy, I'm here to help you navigate the maze of wires, extruders, and filaments. The right choice will depend on your budget and how much tinkering you're willing to do.

Multi-Material Units (MMU)

The Prusa MMU is an add-on kit that lets your printer handle up to 5 filaments with a single extruder. From personal experience, the MMU3 has come a long way, but it's still a gadget best suited for people who aren't afraid to turn screws and dial in calibration.

Dual extrusion systems

This is my personal favorite category for sheer efficiency. Dual extrusion means your printer has two nozzles:

1. Two extruders, one toolhead: Two filaments feed into a single toolhead with two nozzles. It's compact, but getting the height calibrated perfectly is essential.
2. IDEX (Independent Dual Extruder): The crown jewel! Two fully independent toolheads.

The biggest advantage of an IDEX system is that you can almost completely forget about the purge tower. While one toolhead is printing, the other is parked. This translates into massive material savings and opens the door to using soluble support materials. The downside is that these printers tend to cost more.

Third-party solutions like Palette

The Palette system from Mosaic Manufacturing cuts and splices filaments of different colors to create a single multicolor strand before it ever reaches your printer. The technology is seriously impressive, but the price tag is steep and the calibration is incredibly precise.

Even though the AMS has simplified the landscape, the competition isn't standing still. Other brands like Creality are promising systems such as their CFS. For those of you who already have a solid machine and love to experiment — like the Anycubic Kobra — there are always community-driven projects to add these features. If that's your thing, take a look at our review of the Anycubic Kobra S1 Combo.

What does each multi-color solution actually cost?

The cost of a multi-color solution varies wildly — from around €30 for a specialty filament to over €700 for a printer with dual extrusion. To keep things clear, I've put together a comparison table of the most popular systems and their approximate prices in 2026.

As you can see, an AMS is a mid-range investment, while an IDEX printer requires a higher upfront cost but saves you money on material in the long run. For a complete breakdown, check out our complete guide to multicolor 3D printing.

What are the limitations of each multicolor printing system?

Every multicolor 3D printing system has key limitations when it comes to purging, waste, and material compatibility. AMS and MMU systems generate noticeable waste through their purge towers, IDEX systems keep this to a minimum, and multicolor filaments offer no precise color control.

• AMS/MMU Systems: Their biggest drawback is the purge tower. Every color change produces a small block of waste plastic. While you can optimize this by purging into the infill, waste is still a factor worth considering. They're also incompatible with highly flexible filaments (TPU) or abrasive materials without hardened steel nozzles.
• Dual Extrusion (IDEX): The limitation here is the number of colors — typically just two. While incredibly efficient and versatile for soluble supports, you won't be printing full rainbows with this setup.
• Dual/Tricolor Filaments: The limitation is obvious: you have no control over where each color appears. The effect depends entirely on the geometry of the part and the viewing angle. It looks stunning on curved models but falls flat on plain surfaces. A great example is the Anycubic PLA Silk Dual Tricolor.

What's the best option for your budget and skill level?

The best option depends on whether you prioritize ease of use, enjoy tinkering, or need professional-grade efficiency. For beginners, an AMS is the ideal choice; for hobbyists who love building, an MMU; and for efficient support printing, an IDEX system. If you're on a tight budget, multicolor filaments are the best entry point.

Here's my straightforward recommendation based on your profile:

• For beginners who want results without the headaches (Mid-Range Budget): A Bambu Lab AMS system. It's the closest thing to a true plug-and-play experience. The upfront cost is worth it for the peace of mind and reliability you get right out of the box.
• For the maker who loves to tinker (Mid-Range Budget): The Prusa MMU3 is your kind of project. It takes patience and dedication, but the satisfaction of truly mastering it is priceless.
• For maximum efficiency and professional use (High-End Budget): An IDEX system. The initial investment is higher, but the long-term savings on material and post-processing time are significant — especially when using soluble supports.
• For those who want to experiment without spending much (Budget-Friendly): Don't buy anything new! Start with a specialty filament like the Anycubic Silk Dual Tricolor PLA. For the price of a single spool, you can explore the world of multicolor printing without touching a single screw.

FAQ: Common Questions About Multicolor 3D Printing

Is the AMS compatible with all filaments?

Not all of them. It works great with PLA and PETG, but highly flexible filaments like TPU are not recommended due to the risk of jams. Cardboard spools can also cause feeding issues and are best avoided.

How much material is wasted in the purge tower?

Quite a bit. Waste depends on the number of color changes, but modern slicers like Bambu Studio let you purge into the infill, which significantly cuts down on the amount of material wasted.

Is installing an MMU3 kit difficult?

Yes, it requires patience and some technical know-how. It's not a plug-and-play system — it's designed for makers who enjoy fine-tuning and dialing in their machines to perfection.

Is multicolor printing much slower?

Absolutely, yes. Every color change adds purge time, so a multicolor print can easily take two or even three times as long as a single-color print of the same model.

Final Thoughts

What a journey through the colorful world of 3D printing! Hopefully this breakdown has made it much clearer which multicolor system is the right fit for you. Whether you go for the convenience of an AMS, the challenge of an MMU, the efficiency of an IDEX, or the simplicity of a tricolor filament — what matters most is that you have fun and bring your ideas to life in full color. In 2026, the only limit is your imagination! 😉