Snapmaker U1 vs Bambu Multicolour: Is a Tool Changer Worth It?

Multi-colour 3D printing has a dirty secret: most machines that print in several colours spend more filament on waste than on your actual model. Every colour change means purging the old filament into a "poop chute" or a towering block of scrap. A new wave of desktop tool changers — led by the Snapmaker U1 and the Flashforge Creator 5 — takes a different route, using several independent heads instead of one shared nozzle. It has reignited a question makers have asked since the Prusa XL arrived: is a tool changer actually worth it? This guide explains how tool-changing works, how it compares to the AMS-style systems most people know, and who should choose which.

What is a tool-changing 3D printer?

A tool changer is a 3D printer that physically swaps between multiple print heads during a job. Instead of one nozzle doing everything, the machine parks the active head and picks up another — each with its own filament, and often its own nozzle size or material. The concept isn't new in industry, but until recently it was rare and expensive on the desktop, defined mainly by the Prusa XL at well over €2,299. That has changed fast: affordable four-toolhead machines like the Snapmaker U1 and Flashforge Creator 5 and Creator 5 Pro now bring the same architecture to the desktop for around €1,000.

The appeal is simple: because each colour or material has a dedicated head, there is nothing to purge when you switch. No cross-contamination, no giant waste tower, and typically a faster change than pushing a new filament through a shared hot end.

How the Snapmaker U1's SnapSwap system works

The U1 carries four independent toolheads, each pre-loaded and pre-heated with its own filament. When the print needs a new colour or material, the U1's SnapSwap mechanism swaps the entire toolhead in about five seconds using steel-ball kinematic couplings — a design Snapmaker says it tested past one million swaps without failure. Because each head is a complete, dedicated extruder, the machine only purges the tiny amount of filament that has degraded while sitting idle, cutting waste dramatically. The Flashforge Creator 5 and Creator 5 Pro work on the same principle, also carrying four toolheads to achieve near-zero purge waste.

Tool changer vs AMS: the real difference

Most affordable "multi-colour" printers — the Bambu Lab A-series and P-series among them — use an AMS-style filament changer. That means a single nozzle and a feeder that swaps which spool is loaded. It works well and keeps the printer simple, but every colour change flushes the previous filament out of the shared nozzle. On a colourful model, that purge can waste three to four times more material than ends up in the part.

A tool changer — whether the U1, the Flashforge Creator 5 or the Prusa XL — sidesteps the flush entirely. Here's the head-to-head:

	Tool changer (U1, Creator 5, Prusa XL)	AMS-style (single nozzle)
Colour-change method	Swaps the whole toolhead (~5s)	Purges & reloads one nozzle (~90s)
Filament waste	Minimal — up to 80% less	High — purge tower / waste
Cross-contamination	None (dedicated heads)	Possible between colours
Mixed materials in one print	Yes — independent extruders	Limited by shared hot end
Mechanical complexity	Higher (moving heads)	Lower (one head)
Typical price	From ~€999 (U1 / Creator 5)	Varies; often similar or less

The short version: an AMS is simpler and perfectly good if you print mostly single-colour and dabble in multi-colour. A tool changer earns its keep when you print colour often, or genuinely need different materials in one job.

Why waste matters if you sell prints

For a hobbyist, purge waste is an annoyance. For anyone running a print business or a school makerspace, it's a line on the budget. If a multi-colour model wastes three to four times its own weight in flushed filament, your material cost per sellable part balloons. The near-zero purge of a tool changer means the filament you buy goes into products, not the bin — a saving that compounds on every colour print you sell.

What the U1 can (and can't) print out of the box

The standard U1 is semi-enclosed and rated for PLA, PETG, TPU, PVA and PCTG — which covers colour work, prototypes, flexibles and everyday functional parts. Engineering materials that need a heated chamber — ABS, ASA, PA and PC — require Snapmaker's optional Top Cover accessory. If your work is mostly PLA and PETG, the base machine is all you need; if you plan to run high-temperature materials, budget for the cover. (The Flashforge Creator 5 Pro ships fully enclosed with a heated chamber, which is worth weighing if engineering materials are a priority.)

On the software side, the U1 runs open Klipper firmware with Fluidd access and slices in Snapmaker Orca, a tuned fork of the popular OrcaSlicer. If you already use OrcaSlicer, there's effectively nothing new to learn.

Who should choose a tool changer?

Choose a tool changer (U1, Creator 5, Prusa XL) if: you print multi-colour or multi-material regularly, you want to minimise filament waste, you sell printed products, or you want true multi-material capability without the price of an industrial machine.

An AMS-style printer may suit you better if: you print mostly in a single colour, want the simplest possible mechanism, and only occasionally need multi-colour.

Frequently asked questions

Is the Snapmaker U1 a true tool changer?

Yes. It physically swaps between four independent toolheads, each a dedicated extruder with its own filament — unlike AMS systems that share one nozzle. The Flashforge Creator 5 and Prusa XL are tool changers too.

How much filament does a tool changer save?

Snapmaker states up to 80% less waste on multi-colour prints versus purge-based systems, because there is almost nothing to flush on a colour change. Other four-toolhead machines like the Flashforge Creator 5 make similar near-zero-purge claims.

How does the U1 compare to the Prusa XL and Flashforge Creator 5?

All three are tool changers. The U1 and Flashforge Creator 5 start around €999 with four toolheads; the Creator 5 Pro adds a fully enclosed heated chamber, and the Prusa XL (from €2,299+) offers up to five heads, a larger build and a long-established ecosystem. The U1's distinctive strengths are CoreXY speed and an open Klipper/Orca software stack.

Can it print more than four colours?

It prints up to four colours or materials simultaneously via its four toolheads — enough for the vast majority of multi-colour models.

Need help choosing between a tool changer and an AMS system for your workflow? Talk to the Eolas Prints team — we're an official reseller and happy to advise.