Flashforge Guider 3 Ultra 3D Printer

Large-Format Dual-Extruder FDM 3D Printer | CoreXY | 330 × 330 × 600 mm | 350°C

The Flashforge Guider 3 Ultra is a professional-grade, large-format FDM 3D printer built around a CoreXY motion system with dual extruders, a 330 × 330 × 600 mm build volume, and a maximum extruder temperature of 350°C. It is engineered to run continuously — 24 hours a day, 7 days a week — printing everything from standard PLA to high-performance carbon fiber-reinforced composites, without slowing down or breaking down.

If your work requires large parts, engineering materials, complex geometries with support structures, or consistent output over long unattended print sessions, the Guider 3 Ultra is built for exactly that.

⚠️ Important — Read Before Printing

• No heated chamber: The Guider 3 Ultra does not include a chamber heater. For high-temperature engineering materials like PC and PA that require full thermal enclosure, large parts (above approximately 250 × 250 × 250 mm) may experience warping. Plan part orientation and material selection accordingly.
• Weight and placement: This printer weighs 70 kg (154 lbs) and measures 635 × 550 × 1070 mm. Plan your workspace before purchase — it ships on a pallet and requires at least two people to position.
• Filament loading from the rear: The filament chambers are accessed from the back of the machine. If you plan to place the printer against a wall, leave at least 30 cm of clearance at the rear for filament access and maintenance.
• Abrasive filaments require hardened nozzles: CF and GF composite filaments (PA-CF, PETG-CF, PAHT-CF, etc.) will wear a standard brass nozzle rapidly. Use a hardened steel or ruby nozzle for these materials.
• Material switching protocol: When switching between incompatible materials (e.g., PETG after PLA, or any high-temp composite after a standard filament), follow the software purge sequence exactly. The extruder will guide you — skip this step and you risk contaminated extrusion and blocked nozzles.
• Power supply: The printer draws up to 850W peak. Verify your outlet and circuit can handle this load before first use.

What Is CoreXY — and Why Does It Matter?

Most desktop 3D printers move the print head on one axis and the bed on another. Simple, but slow — the heavier the bed, the slower it needs to move to stay accurate.

The Guider 3 Ultra uses a CoreXY system, where two motors work together through a belt arrangement to move the print head in both X and Y directions — while the bed only moves straight down on the Z axis. Think of it like this: instead of pushing a heavy table back and forth, you only move a lightweight pen in any direction above it.

The result: less mass moving at high speed = less vibration = better accuracy at higher speeds. The Guider 3 Ultra reaches a maximum print speed of 500 mm/s with 20,000 mm/s² acceleration — numbers that would shake a conventional Cartesian printer apart — while maintaining a printing precision of ±0.15 mm and a Z-axis position precision of just 0.0025 mm.

600 mm Tall — What You Can Actually Build

The build volume is what separates this printer from the desktop category entirely. At 330 × 330 × 600 mm in single-extruder mode, you can print:

• Full helmet shells and large cosplay props in one piece
• Industrial jigs, fixtures, and tooling that are too large for standard printers
• Architectural models and scale structures at significant real-world sizes
• Functional enclosures, brackets, and housing units for prototyping
• Batch production of smaller parts — up to 2,000 grams of material per day in continuous operation

In dual-extruder mode the X axis reduces to 300 mm (to accommodate the second nozzle park position), but you gain the ability to print with two materials simultaneously — the most important use being soluble support material.

Dual Extruders — The Right Tool for Complex Geometry

A single extruder printer uses the same material for both the model and its supports. Removing those supports always leaves marks, requires manual work, and can damage fine details.

With dual extruders, the Guider 3 Ultra can print supports in a different material than the model — for example, water-soluble PVA or HIPS supports under a PLA or ABS model. When the print is done, you dissolve or peel the supports away cleanly, leaving behind a surface finish you could not achieve with single-material supports.

Alternatively, both extruders can run the same material — which the Guider 3 Ultra uses intelligently to cut model print time by approximately 70% on support-heavy jobs, by using a same-material raft support system that requires fewer extruder switches and less purge time between changes.

The dual extruder system has also been tested to 100,000 switching cycles without measurable vibration or alignment degradation — it is built for production volume, not just occasional use.

Sealed Filament Drying Chambers — Moisture Is the Enemy

Here is something most printer listings will not explain clearly: moisture destroys print quality.

Engineering filaments like PA (nylon), PAHT-CF, and PA-GF absorb humidity from the air within hours. When a wet filament is extruded, the moisture vaporizes inside the nozzle, creating micro-bubbles in the extrusion — which shows up as stringing, rough surfaces, weak layer adhesion, and popping sounds during printing.

The Guider 3 Ultra includes two sealed filament chambers with built-in hygrometers (humidity gauges) and desiccant storage. Your filament stays dry from the moment you load it to the moment the print finishes — without a separate filament dryer running on your desk. For labs and workshops printing PA, PAHT-CF, or PA-GF regularly, this is a significant operational advantage.

Built for Overnight and Unattended Production

The Guider 3 Ultra includes every system needed to start a long print job and walk away with confidence:

• Auto bed leveling: Full automatic compensation before every print — no manual tramming, no drift over time
• Filament runout detection + automatic extruder switching: When one spool runs out mid-print, the printer automatically switches to the second extruder and continues — no failed print, no wasted hours
• Power loss recovery: If the power goes out, the printer remembers exactly where it was and resumes from that point when power returns
• Auto power-off: Print finishes at 2 AM — the printer shuts itself down, safely. Pick it up in the morning.
• Built-in HD camera: Monitor progress remotely via the FlashMaker app (iOS/Android) — check on overnight jobs, verify first layers stuck, catch failures before they waste a full spool
• HEPA 13 air filtration: Captures ultrafine particles and VOCs — the same filtration grade used in medical and cleanroom environments — making extended operation in shared workspaces safe

Quick-Release Nozzle — 3-Second Tool-Free Swap

Changing nozzle diameter (0.4 → 0.6 → 0.8 mm) or replacing a worn nozzle after heavy composite printing takes 3 seconds with the quick-release system — no tools, no burns from wrestling with a hot block with pliers. For a printer running production volumes of abrasive CF/GF filaments, this is not a convenience feature. It is a maintenance necessity.

Technical Specifications

Print Settings Reference

Compatible Filament Materials

PLA · PLA-CF · PETG · PETG-CF · PETG-GF · ABS · ASA · HIPS · PC · PA · PA-CF · PA-GF · PA12-CF · PAHT-CF · PAHT-GF · PET-CF · PET-GF · CoPA · NexPA-CF25

Who Is This For?

The Flashforge Guider 3 Ultra is not a printer you buy because it is the next step up from your desktop machine. It is a printer you buy when your work has outgrown what desktop machines can do:

• R&D teams and engineering departments that need to prototype large assemblies, functional structural parts, and composite components in PA-CF, PAHT-CF, or PET-GF — materials that require 350°C and a stable build environment to print reliably
• Manufacturing and small-batch production environments running the printer 24/7, producing 2,000g+ of material per day, and needing the auto-switching, power recovery, and auto shut-off features to actually deliver on that throughput
• Service bureaus and print farms that need cluster management — the FlashMaker app and cloud platform allow multi-printer management, remote monitoring, and job queuing from anywhere
• Cosplay makers, prop builders, and artists who regularly hit the size limits of standard printers and spend hours gluing together split parts — the 600mm build height eliminates most of those splits entirely
• Educational institutions and maker labs investing in a single professional machine that handles every filament type their curriculum demands, with HEPA 13 filtration to keep the workspace safe during intensive use

Browse our complete large-format 3D printer collection or explore all professional 3D printers at Supplies 3D.