3D Printing InfoPrinter comparison
FlashForge Guider 3 Ultra vs Rat Rig V-Core 4.1
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore FlashForge Guider 3 Ultra comparisonsMore Rat Rig V-Core 4.1 comparisons
| Property | FlashForge Guider 3 UltraINDUSTRIAL | Rat Rig V-Core 4.1COREXY |
|---|---|---|
| Identity | ||
| Brand | FlashForge | Rat Rig |
| Class | INDUSTRIAL | COREXY |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | Flashforge Guider 3 Ultra; the FlashForge spec table gives the machine name as "Guider 3 Ultra"[1] | Rat Rig V-Core 4.1, described by Rat Rig as a large-format open CoreXY 3D printer kit[2] |
| Street price (USD; dated snapshot per entry) | $2,399.00 against a $3,499.00 regular price on flashforge.com, but the listing checked is the refurbished SKU and is marked Sold out (Aug 2026)[1] | Not documented |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Top of the Guider 3 series. Build size depends on which head is used: 330 x 330 x 600 mm with one extruder, 300 x 330 x 600 mm with both. Siblings Guider 3 (300x250x340) and Guider 3 Plus (350x350x600) are both single-extruder. A refurbished SKU exists alongside the new machine, so check which one a price refers to[1][3][4] | Three sizes, all at the same base-kit price. Acceleration is the size-dependent figure and the one most often mis-quoted: 15,000 mm/s2 at 300 mm, 12,000 at 400 mm, 8,000 at 500 mm. IDEX is a configuration option and changes the usable area per toolhead (copy mode 150x150x300 at the 300 size, mirror mode 95x95x300). Base kit excludes electronics. Rat Rig prices the base kit only in EUR (EUR 873.90 on sale from EUR 971.00, Aug 2026); no USD list price is published, so no USD street price is recorded here[2] |
| Market position: superseded? successor announced? | Not documented | Current revision, replacing the V-Core 4; Rat Rig sells a 4.1 upgrade kit for existing V-Core 4 machines[2] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 330 x 330 x 600 mm with a single extruder; 300 x 330 x 600 mm when both extruders are in use[1] | 300 x 300 x 300, 400 x 400 x 400 or 500 x 500 x 500 mm. Sortable value is the 300 mm kit[2] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 635 x 550 x 1070 mm; packaging 775 x 690 x 1235 mm[1] | 623.2 x 583 x 785 mm (300); 723.2 x 683 x 885 mm (400); 823.2 x 783 x 985 mm (500). Sortable value is the 300 mm kit[2] |
| Net weight (kg) | 70 kg net, 86 kg gross[1] | Kit weight 35 kg (300), 45 kg (400), 55 kg (500)[2] |
| Frame construction & material | Enclosed professional chassis; FlashForge describes a lightweight, stable structure for high-speed operation[1] | 30-series aluminium extrusion; the 4.1 adds a steel X-axis gantry for rigidity[2] |
| Enclosure: open / enclosed; panel material; door/lid | Closed design with an air filter fitted[1] | Open frame in the base kit[2] |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | CoreXY with two extruders, per a third-party buyer's guide. FlashForge's own spec table does not state the kinematics[5][1] | CoreXY; Hybrid CoreXY and IDEX are configuration options[2] |
| Speed & Acceleration | ||
| Max print speed (claimed, mm/s) | 10-500 mm/s printing speed, 500 mm/s maximum travel speed (manufacturer figures)[1] | Not documented |
| Max acceleration (claimed, mm/s²) | 20,000 mm/s2 maximum (manufacturer claim)[1] | Size-dependent: 15,000 mm/s2 at 300 mm, 12,000 at 400 mm, 8,000 at 500 mm (manufacturer claims)[2] |
| Vibration Compensation / Input Shaping | ||
| Input shaping supported? Implementation (Klipper IS / Marlin ZV / proprietary) | Active vibration compensation, which FlashForge says was enhanced for this model. Implementation not named[1] | Not documented |
| Extruder | ||
| Type (direct drive / bowden) & design name | Two extruders[1] | Full-metal skeleton toolhead, new in the 4.1[2] |
| Hotend & Nozzle | ||
| Max nozzle temp claimed AND firmware max temp limit (both values) | 350 °C maximum extruder temperature (manufacturer claim)[1] | 350 °C maximum nozzle temperature (manufacturer claim)[2] |
| Stock nozzle size & sizes included in box | 0.4 mm default; 0.6 and 0.8 mm optional[1] | 0.4 mm hardened steel and 0.6 mm included[2] |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | 120 °C bed setting supported (manufacturer figure)[1] | 120 °C maximum heatbed temperature (manufacturer claim). The 400 and 500 sizes get 8 mm thick beds in the 4.1[2] |
| Bed surface (material, texture, coating), single/double-sided | Replaceable flexible steel-plate platform, magnetic. No glass bed[1] | Not documented |
| Leveling & Z-Offset | ||
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | Full-auto one-click levelling; probe technology not named[1] | Not documented |
| Filament Handling & Detection | ||
| Filament runout sensor (type, location) | Filament run-out reminder[1] | Not documented |
| Cooling & Air Handling | ||
| Part-cooling fan(s): count, size, ducting design | Not documented | Improved part cooling, listed by Rat Rig as one of the 4.1 changes[2] |
| Chamber/exhaust fan & filtration (activated carbon / HEPA) | Air filter fitted; filter media not specified in the FlashForge table[1] | Not documented |
| Electronics & Power | ||
| Input voltage (110/220 V, switch or auto) | AC 100-240 V, 50/60 Hz[1] | Not documented |
| Total rated power draw | 850 W maximum[1] | Not documented |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Not named; slicers are Orca-Flashforge and FlashPrint 5, with OrcaSlicer listed as compatible[1] | RatOS 2.1 (Rat Rig's Klipper distribution)[2] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | 7-inch touch LCD[1] | Not documented |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | USB, Ethernet, Wi-Fi, plus cloud[1] | Not documented |
| Camera: built-in / optional? Resolution & framerate (verify — marketing often omits real fps) | Remote camera monitoring and time-lapse video supported; resolution not published[1] | Not documented |
| Calibration Routines & QoL | ||
| Assembly level & time from unbox to first print | Not documented | Self-assembly kit; the 4.1 ships pre-made cables that need no crimping, with rewritten step-by-step build documentation[2] |
| Power-Loss & Interruption Recovery | ||
| Power-loss recovery: mechanism (how is state saved? capacitor / eeprom / file on shutdown?) | Power-loss recovery supported; mechanism not published. Automatic shutdown also supported[1] | Not documented |
| Materials Support | ||
| Officially supported filament list | PLA, ABS, HIPS, ASA, PETG, CoPA, PLA-CF, PETG-CF, PAHT-CF, PAHT-GF, PET-CF, PET-GF, PA12-CF, PA-CF, PA-GF, NexPA-CF25[1] | PLA, PETG, ABS, ASA, TPU, PET, PA, PC, PVA, PLA-CF, PETG-CF, ABS-GF, ASA-CF, PA6-CF, PA6-GF, PAHT-CF, PPA-CF, PET-CF[2] |
| Safety | ||
| Certifications (UL/ETL/CE/FCC — verify, don't assume) | CE, FCC, RoHS (as printed in FlashForge's own spec table)[1] | Not documented |
Manufacturer claims, independent measurements, packages and test conditions retain their source wording. FDM linear speed and resin vertical speed use different units and are not directly comparable. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.
Sources for this comparison
- Flashforge Guider 3 Ultra product page (refurbished listing) flashforge.com · 2026-08 · vendor
- Rat Rig V-Core 4.1 product page ratrig.com · 2026-08 · vendor
- FlashForge Guider 3 technical data table 3djake.com · 2026-08 · vendor
- FlashForge Guider 3 Plus technical data table 3djake.com · 2026-08 · vendor
- Flashforge printer buyer's guide, 5M to Creator 5 eolasprints.com · 2026-08 · review