The Modix BIG-120Z V4 is a large-format FDM 3D printer (600 × 600 × 1200 mm) built for tall, one-piece parts, reducing splits and post-processing while improving strength; as the fourth-gen BIG series model it adds stronger Nema-23 motors, CNC-machined brackets, and the Griffin printhead for precision and reliability, plus a fully enclosed design supporting up to 110 °C for materials like PLA, PETG, ABS, ASA, PC, Nylon, TPU, and composites. It prints up to 250 mm/s with ~10 µm X/Y accuracy and includes automated calibration, optical end-stops, a filament-clog detector, and an optional Modix IDEX add-on (also usable as an automatic filament changer). Aimed at professional use across automotive, construction, manufacturing, education, and more, it offers Wi-Fi remote control and a modular ecosystem — air filtration, magnetic bed, 8 kg spool shelf — for long, industrial-grade, tall, seamless prints.
What is the print quality and performance of the Modix Big-120Z Generation 4 3D printer?
The productivity of the Modix Big-120Z 3D printer depends on the extruder, with Griffin variants ranging from ~46.9 g/h (High-Resolution) to over 500 g/h (Ultra), driven by differences in hotend length, melt path design, and heater power.
Feature / Spec
Griffin (Standard)
Griffin High-Resolution
Griffin High-Flow
Griffin Ultra
Use Case
All-purpose printing
Ultra-fine detail
High-speed, large prints
Maximum throughput, industrial use
Design
Standard hotend
50% shorter for precision
Double-length for more melt volume
Extended dual-zone melt path (4× standard)
Flow Rate
~30 mm³/s
~15 mm³/s
~45–60 mm³/s
~160 mm³/s
Extrusion Rate
~93.8 g/h
~46.9 g/h
~140.6–187.5 g/h
>500 g/h
Nozzles
Volcano-compatible; 0.4, 0.6, 0.8mm
Volcano-compatible; 0.4mm
Volcano-compatible; 1.0mm
Volcano-compatible; 1.6mm
Heater
50W standard
50W standard
80W upgraded
Dual heaters (>80W)
Cooling
Standard fan
Standard fan
Standard fan
Dual XXL blowers
Max Temp
Tested to 340°C, supports up to 500°C
Tested to 340°C, supports up to 500°C
Tested to 340°C, supports up to 500°C
Tested to 340°C, supports up to 500°C
Build Volume Impact
None
None
None
Reduces X by 50mm; Y by 50mm (IDEX mode)
The upgraded Griffin printhead handles up to 450°C and supports 0.4 to 1.2 mm nozzles, ensuring reliable extrusion for both detailed and fast prints.
The optional Griffin High-Resolution Extruder supports tight tolerances. For example, this video shows 50-micron layer height printing on the Modix BIG-60, producing two detailed 11.5mm bolt parts in 27 minutes. Printed in Glitter Gray PLA using a 0.4mm nozzle at 185°C, 55°C bed, 2.5mm retraction, 100% fan, 2 outer walls, and 7 top solid layers.
The optional Griffin Ultra hotend halves production time — a 1-meter statue printed in 21 hours vs. 47 with the standard Griffin Extruder.
The Modix BIG-120Z's reinforced structure, with Nema-23 motors and CNC-machined brackets, ensures stable layer adhesion, and smooth 40-micron resolution across the full 1200 mm Z-axis. For example, look at the following PETG part 3D printed by Rene Le Grand.
The motion system of the Modix-120Z uses HIWIN linear rails on the Z-axis for smooth, low-vibration movement. TMC2660 stepper drivers with 256 micro-stepping ensure precise positioning — 10-micron on X/Y axes and 0.5-micron on Z. As an example, the Modix BIG-120Z shows a 1150 x 50 x 50 mm rocket model printed in PLA with a 0.8 mm layer height.
The BIG-120Z V4 uses a Duex 5 expansion board with dedicated drivers for each Z and X motor, enabling advanced automated calibration: bed tilt, 100-point bed leveling, gantry alignment, and Z offset calibration between the nozzle and the BL Touch probe — all improving print quality.
3D Print Sample:
Optical end-stop switches boost mechanical reliability with improved accuracy and repeatability, especially useful for resuming prints after power outages.
The fully enclosed aluminum composite design ensures stable printing temperatures for consistent layer bonding with high-temp materials.
The filament clog detector identifies under-extrusion, helping the BIG-120Z V4 maintain high print quality during long prints, producing tall, seamless parts with minimal post-processing.
Which filaments can you use with the Modix Big-120Z?
The Modix BIG-120Z V4 supports over 12 filament types, from PLA and PETG to advanced materials like ABS, PC, Nylon, TPU, and composites such as Carbon Fiber and Woodfill. Its Griffin printhead heats to 450°C, with upgrades reaching 500°C, and the bed heats to 110°C — ideal for high-temp filaments. An optional aluminum enclosure improves temperature stability for materials like ABS, ASA, and PC. Hardened steel nozzles (0.4–0.8 mm) resist wear from abrasive filaments. As an open material system, it works with any standard 1.75 mm filament, giving users flexibility with third-party options.
PLA Print Sample:
Credit: Paul Vincent, Modix Facebook Group
PLA Print Sample:
Credit: Paul Vincent, Modix Facebook Group
TPU Print Sample:
Credit: Paul Vincent, Modix Facebook Group
ASA Print Sample:
PLA and PETG 3D Print Samples: Kim Farkas, a French artist and Beaux-Arts de Paris graduate, revolutionized his work by creating large tubular structures using fewer parts. He employs the Griffin printhead to produce transparent PLA and PETG components.
The BIG-120Z V4 features a 3 kg spool holder, a PEI sheet for easy print release after cooling, and a filament sensor that detects run-out, under-extrusion, and clogs. An optional 8 kg spool shelf supports longer prints.
The optional IDEX enables dual-material printing, ideal for combining structural filaments with water-soluble supports. It includes a second Griffin printhead, clog detector, PTFE tube, and spool mount. Modix also offers compatible soluble filament and a dissolving solution for complex geometries.
Printing with breakaway support filament
Printing with soluble support filament (PVA)
What is the build volume of the Modix Big-120Z?
The Modix BIG-120Z V4 offers a tall 600 x 600 x 1200 mm build volume (432 liters), prioritizing vertical space over footprint. Its 1200 mm Z-axis enables printing tall objects in one piece, for example, a 1.2 m Coca-Cola bottle.
What is the difference between the Modix Big-120Z V4 and Optimus P1?
The Modix BIG-120Z V4 stands out with a taller 1200 mm build height versus the Optimus P1’s 1100 mm, enabling larger prints. Its Griffin Ultra extruder reaches 500°C, surpassing the P1’s 300 °C limit for advanced material compatibility. Though heavier and starting at $12,000, the BIG-120Z delivers industrial-grade precision (down to 50 microns) and optional IDEX support, making it ideal for professional, high-volume, multi-material printing. The P1, while more affordable, offers fewer features for advanced use.
Specification
Modix BIG-120Z V4
Optimus P1
Price (USD)
$12,000+
$5,000+
Build volume (mm)
600 × 600 × 1200
600 × 600 × 1100
Enclosure / chamber
Optional enclosure (aluminum composite panels), no active heated chamber
Optional aluminum + acrylic enclosure, no active heated chamber
Extruders / IDEX
Single (Griffin); IDEX optional
CoreXY direct drive, single extruder
Max nozzle temp (°C)
Up to 500
300
Max bed temp (°C)
120
100
Connectivity
USB, SD card, Wi-Fi
USB, SD card
Touchscreen
7-inch color touchscreen
3.5-inch touchscreen
Machine weight
Approx. 140 kg
Approx. 55 kg
Assembly
Self-assembly kit with video guidance
Self-assembly kit
What printer controls are available on the Modix Big-120Z?
The Modix BIG-120Z provides 3 distinct printer control methods.
1. 7-Inch Touchscreen Interface
The BIG-120Z features a 7-inch color touchscreen with the Duet3D 3D printer controller, offering intuitive, menu-driven access to print management, calibration, and settings. A frontal power switch offers an easy-to-reach power on/off button, useful when the printer is installed in a tight corner.
2. Remote Web Interface (Wi-Fi)
The BIG-120Z's Duet2 Wi-Fi controller allows remote operation via a web interface, letting users upload G-code and manage prints from any network-connected device.
3. File Transfer via USB and SD Card
The printer supports USB and SD card file transfer, allowing standalone printing or direct control via external slicer software or command interfaces.
What connectivity options are available on the Modix Big-120Z?
The BIG-120Z V4 supports 3 connectivity options — USB, SD card, and Wi-Fi for file transfer and control. Users can access the printer via its IP address shown on the touchscreen. For Wi-Fi-restricted environments, users can buy a Duet3D Ethernet board as an alternative.
The BIG-120Z V4’s Duet3D control board enables full remote management via a web interface on any device, allowing file transfers, monitoring, and settings adjustment without physical access to improve the overall user experience. Initial setup follows the standard Duet3D network configuration process.
What software is offered with the Modix Big-120Z?
The BIG-120Z V4 supports all major slicers — Cura, Simplify3D, PrusaSlicer, OrcaSlicer, and offers dedicated 3D printing profiles for these in the Download area.
The BIG-120Z V4 runs on the open-source Duet RepRap firmware, powering both its touchscreen and web interface. It supports automated calibration, filament monitoring, and power-loss recovery. The web interface works on any device, enabling full remote control, including file transfers and settings adjustments. All standard 3D file formats are supported, ensuring compatibility.
What is the design and build quality of the Modix Big-120Z?
What is the design and form factor of the Modix Big-120Z?
The BIG-120Z V4 features a vertical 600 x 600 x 1,200 mm build volume and a modular black aluminum frame shipped as a self-assembly kit, aiding customization, maintenance, and user familiarity.
As the fourth-generation Modix 3D printer, the BIG-120Z V4 includes front and side doors with elastic seals, a rear hatch, and a top cover with pneumatic support for easy access. Internal LED lighting improves visibility during printing.
The printer lacks a fully heated chamber by default, but its enclosure panels and access features enhance safety and temperature stability.
What is the motion system of the Modix Big-120Z?
The BIG-120Z V4 uses HIWIN linear guides and reinforced Gates belts for precise positioning on tall vertical prints.
The fourth-generation BIG-120Z V4 uses NEMA 23 motors instead of NEMA 17, providing higher torque and stability for moving the large bed and gantry with precision.
What are the build platform specifications of the Modix Big-120Z?
The BIG-120Z V4 has a 600 x 600 mm heated build platform with 1,200 mm Z-travel. A BLTouch probe enables automatic bed leveling, managed by the Duet controller and Duex5 expansion board.
The bed comes with an aluminum + PEI surface, with an optional magnetic system that uses an adhesive sheet and a removable spring steel plate for easier part removal and maintenance; the flexible spring steel plate is dual-sided, with a textured PEI powder-coated face and a smooth glossy PEI sheet for a polished finish.
What is the hotend and extruder system of the Modix Big-120Z?
The BIG-120Z V4 uses the Modix Griffin printhead with a Bondtech dual-drive extruder and E3D Super Volcano hotend, enabling high-flow, high-temperature printing. It supports standard 1.75 mm filament.
For expanded production, the BIG-120Z V4 can be upgraded with an IDEX system, adding a second Griffin printhead, an extra Y-axis motor, and supporting motion components.
How does the Modix Big-120Z handle filament storage and feeding?
The BIG-120Z V4 includes a built-in filament sensor that detects clogs, under-extrusion, and filament run-out — standard in the Modix Generation 4 printers.
Filament is stored externally, with default support for up to 3 kg spools. The upgraded Gen 4 filament rack improves stability and supports spools up to 8 kg for smoother feeding.
What is the mainboard of the Modix Big-120Z?
The BIG-120Z V4 uses a 32-bit Duet 3D controller with a Duex5 expansion board for multi-axis motion and expanded I/O. The Duex5 supports automated calibration, including gantry alignment, bed leveling, and Z-offset adjustment.
The BIG-120Z V4 is controlled via a 7-inch touchscreen or remotely through Wi-Fi or Ethernet for monitoring and file uploads.
What are the power supply specifications of the Modix Big-120Z?
The BIG-120Z V4 uses separate power supplies: high-current AC for the heated bed and 24V DC for motion electronics. The optional Modix Power Distribution System improves safety and stability by consolidating power lines.
What comes included in the box with Modix Big-120Z V4 3D printer kit?
The Modix BIG-120Z V4 3D printer kit includes:
• All parts required to assemble the Modix BIG-120Z V4 3D printer
• Powder-coated aluminum components
• 1x Hex and screwdriver sets
• Cable and wire sets
• 1x SD card
• Spare parts
• 1x Aluminum print bed
• 1x 7-inch LCD touchscreen
• 1x Spool holder (supports up to 3kg spools)
• Power cords
• 1x Power supply
• 1x Leveling caster
• 1x Tilt screen, large secondary emergency button, and frontal power switch set
• 3x Nozzles (0.4mm, 0.6mm, and 0.8mm)
The BIG-120Z V4 ships as a DIY kit with all components — structural parts, electronics, motion system, and fasteners — organized in multiple boxes. Assembly tools are included, and no extra equipment is needed. The 7-inch touchscreen is pre-configured with Duet3D firmware, and the SD card contains setup files and documentation. Buyers also get access to the Modix customer zone with 3D assembly manuals, user guides, and slicing profiles.
Please Note: Package contents are determined by the manufacturer and may change without notice. To confirm the current items included with this product, please contact a Top3DShop sales representative before placing your order.
What upgrades and accessories are available for the Modix Big-120Z V4 3D printer?
The Modix large 3D printers support over 20 upgrades.
Accessory
Function
Traget User
Price (USD)
BIG-120Z Enclosure
Provides heat & noise insulation, reduces warping
Users printing with high-temp or sensitive filaments
$2,200
Griffin Ultra
High-flow hotend for fast printing
Industrial users needing max extrusion speed
$1,100
Griffin High-Flow
Fast new hotend designed by Modix for printing large objects
Users wanting faster print speed without quality loss
$350
Spare Griffin Hotend
Replacement hotend parts
All users for maintenance
$180
IDEX Dual Print-head
Independent dual extruder setup for multi-material printing
Advanced users needing dual extrusion
$1,100
IDEX Calibration Tool
Calibration for dual extruders
IDEX users for alignment
$200
Filament Dryer
Removes moisture from filament
Users printing moisture-sensitive materials
$1,600
Griffin Brass Nozzles
Nozzle set for varied layer heights
Users needing nozzle variety
$60
Griffin Hardened Steel Nozzles
Durable nozzles for abrasive filaments
Users printing abrasive or high-temp materials
$170
Magnetic Bed
Removable PEI-coated bed for easy prints
All users for easier print removal
$600
Extra PEI Sheet
Replacement build surface
All users for maintenance
$150
Active Air Filter
Filtration of sub-micron particles and fumes
Users needing fume control
$1,350
Casters
Wheels for easy printer movement
Users relocating printer
$150
Power Distribution Unit
Organized, safe power supply
Users needing better power management
$900
Spools Shelf
Large filament spool holder
Users running large print jobs
$400
Basic Maintenance Kit
Essential tools for upkeep
All users for routine maintenance
$300
Advanced Maintenance Kit
Comprehensive service tools
Professionals for deep servicing
$1,400
Filter Spares Set
Replacement filters for air filter
Air filter users needing spares
$300
BIG-120Z Enclosure
The Modix BIG-120Z’s closed enclosure made of 3mm black aluminum composite panels maintain a stable ambient temperature, reducing warping and cracks by blocking drafts and sudden temperature shifts.
Griffin Ultra Printhead
The high-flow hotend upgrade for the BIG-120Z extrudes over 500 g/hour with 1.75 mm filament, doubling output for faster large-scale prints.
Griffin High-Flow Hotend
The high-flow hotend for the BIG-120Z features an 80W heater, PT-1000 thermistor, and 1 mm nozzle, designed for customers who print large bulky objects and need to print fast.
Spare Griffin Print Head
The Griffin printhead’s replaceable hotend features a slide-in/out mount for quick swaps and a rigid three-face heat-block design for improved impact resistance and reliability. Users can swap the entire filament melting subsystem with minimal downtime.
IDEX Dual Printhead Add-on
The Modix IDEX Filament Changer enables two independent printheads to print with different materials or colors, including water-soluble supports. IDEX allows printing of models with internal geometries, provides high-quality surface finishes, and reduces post-processing labor.
IDEX Calibration Tool
A hands-free tool for IDEX-equipped BIG-120Z printers aligns both nozzles from three angles, enabling accurate offset calibration and consistent multi-material print quality.
Filament Dryer
An automatic dryer that holds two 5 kg spools or one 8 kg spool, optimized for hygroscopic filaments like Nylon, PETG, PC, and water-soluble supports to prevent moisture-related print issues.
Griffin Brass Nozzles
A five-pack of brass nozzles for the Griffin printhead in 0.4 to 1.2 mm sizes, enabling high-flow, fast printing with standard filaments.
Griffin Hardened Steel Nozzles
A set of three hardened steel nozzles (0.4, 0.6, 0.8 mm) for abrasive materials like carbon and glass fiber, rated for up to 450 °C without wear.
Magnetic Bed
A full-size removable magnetic bed add-on with a rough PEI powder-coated side and a glossy PEI sheet side for easy part removal and maintenance.
Extra PEI Sheet for Modix Printer
A 660 x 660 mm spare PEI sheet that fully covers the BIG-120Z bed, used as a replacement for non-magnetic setups.
Active Air Filter
A three-phase air filter with a dust pre-filter, HEPA filter for sub-micron particles, and activated carbon for fumes that cleanses the printer’s chamber by capturing micro-particles and gas fumes, improving surrounding air quality.
Casters
Adjustable leveling casters for the BIG-120Z provide mobility, balance adjustment, and vibration reduction.
Power Distribution Unit
A dedicated PDU ensures stable, safe power delivery to the BIG-120Z and its accessories.
Spools Shelf
A large spool shelf add-on holds multiple spools for easier filament management during large format 3D prints.
Basic Maintenance Kit
A set of essential tools for routine maintenance of the BIG-120Z, ensuring consistent performance.
Advanced Maintenance Kit
A comprehensive maintenance kit with advanced tools and spare parts for in-depth servicing and long-term upkeep of the BIG-120Z.
Filter Spares Set
Replacement pre-filters, HEPA, and carbon filters for the Active Air Filter to maintain optimal performance.
What maintenance does the Modix Big-120Z require?
The Modix Big-120Z requires 9+ scheduled maintenance procedures to ensure stable motion, accurate calibration, and reliable extrusion.
Daily maintenance
Clean the PEI-coated print surface with 99% isopropyl alcohol to remove grease and residues, ensuring proper first-layer adhesion.
Visually check the nozzle and hotend for filament buildup; remove debris with a brass wire brush to prevent extrusion blockages.
Verify operation of the filament runout sensor by testing trigger detection without filament, ensuring uninterrupted long prints.
Weekly maintenance
Inspect and adjust belt tension on the X and Y axes to maintain precise positioning.
Lubricate the HIWIN linear guides with light machine oil to reduce friction and wear.
Check the torque on frame bolts and gantry fasteners to maintain structural rigidity during tall builds.
Monthly maintenance
Re-run the Duet/Duex automated calibration routines (bed leveling, gantry alignment, Z-offset) to maintain flatness within ±0.1 mm across the 1,200 mm Z-height.
Inspect Bondtech drive gears in the Griffin extruder; clean filament dust and apply lubrication to maintain feed consistency.
Confirm all NEMA 23 stepper motors remain securely mounted with no vibration-induced loosening.
Semi-annual maintenance
Replace worn linear guide carriages showing play or resistance.
Inspect X-axis drive components for gear wear, replacing any parts with tooth damage.
Verify AC bed heater operation and temperature control accuracy within ±1 °C of the setpoint, ensuring uniform heating across the large build plate.
The BIG-120Z’s tall build volume requires regular motion and temperature recalibration to ensure consistent print quality on large parts.
What support and warranty come with the Modix Big-120Z?
The BIG-120Z V4 includes a 12-month warranty covering all non-consumable parts, excluding items like PEI sheets and nozzles. Coverage for mechanical and electronic systems can be extended up to two more years. Modix offers comprehensive support for BIG-120Z V4 owners, including access to the Customer Zone with manual, print profiles, firmware, videos and online 3D models. Support is available via email Sunday–Thursday (09:00–18:00 GMT+2), with video sessions on request, ensuring timely help with setup, troubleshooting, and operations.
Full warranty terms: https://www.modix3d.com/terms
How much does the Modix Big-120Z V4 cost?
The Modix BIG-120Z V4 is available at $8,960.00, offering strong value for its 600 x 600 x 1200 mm build volume. The base price includes the full DIY kit, assembly tools, and a 12-month warranty.
Chassis
Solid 40X40 T-slot aluminum profiles
Compatible slicers
Slic3r, Cura, and Simplify3d
Electronic controller
Duet 2 WiFi
Firmware
Open-source Duet RepRap firmware
Max. bed temperature
110°C (with enclosure)
Print surface
PEI film with 3M high temp adhesive sheet
Shipping weight
120 KG (~265 lbs)
Splicing technology
FFF (Fused Filament Fabrication)
Stepper drivers
Quiet TMC2660 stepper drivers, up to 256 micro-stepping
Supported materials
PLA, PETG
Travel speed
Up to 350 mm/sec
Automated Calibration
Bed tilting calibration, Bed leveling, Gantry alignment, Z offset calibration
Bed heater
AC powered bed heater 1370 Watt (1,200 Watt for 110V users)
BIG METER and 180x power requirement
208-240V, 32A connections
BIG-120X Machine Size
1,556×1,060×1,506 mm
BIG-120X Print Volume
1200x600x640 mm
BIG-120X Shipping Weight
170 KG (~325 Ibs)
BIG-120Z Machine Size
906x1060x2,066 mm
BIG-120Z Print Volume
600x600x1,200 mm
BIG-120Z Shipping Weight
140 KG (~265 Ibs)
BIG-180X Machine Size
2,630×1,060×1,573 mm
BIG-180X Print Volume
1,800x600x600 mm
BIG-180X Shipping Weight
210 KG (~465 Ibs)
BIG-60 Machine Size
906x1060x1,506 mm
BIG-60 Print Volume
600x600x660 mm
BIG-METER Machine Size
1,739×1,424×1,976 mm
BIG-METER Print Volume
1,000×1,000×1,000 mm
BIG-METER Shipping Weight
200 KG (~440 Ibs)
Brackets
Powder coated laser cut aluminum brackets and joints
Clog Detector
Default with every printer
Delivery
Self assembly kit
Electronics Power Supply
Meanwell 24V 280W
EVEREST Machine Size
1,356×1,445×3,068 mm
EVEREST Print Volume
2,000×1,000×1,000 mm
EVEREST Shipping Weight
300 KG (~440 Ibs)
Griffin High-Flow
Double-length hotend for faster extrusion
Griffin High-Resolution
Shorter hotend for ultra-precise prints with fine details
Griffin High-Resolution Flow Rate
Up to 15 mm³/s
Griffin High-Resolution Max Temperature
340°C
Griffin High-Resolution Nozzle Sizes
0.2 mm – 0.8 mm
Griffin Standard
Default option, balanced combination of speed and detail
Griffin Ultra
Complete extruder system with extended hotend
Griffin Ultra Flow Rate
160mm³/s @ 1.6mm nozzle, 1.2mm layer height
Griffin Ultra Layer Height Range
0.3 – 1.2mm
Griffin Ultra Nozzle Diameter
1.6mm
Griffin Ultra Print Head Weight
900g (includes motor & BMG)
Griffin Ultra Print speed
Up to 250mm/sec (with 0.3mm layers)
Heat Bed AC powered heater
1370 Watt
Heating zones
Dual heating zones
IDEX
Optional add-on for all generation 4 printers
Interfaces
Touch Screen, Web Interface
Linear Guide Rails
HIWIN MGW9H
Mechanical Position Accuracy X
10 Micron
Mechanical Position Accuracy Y
10 Micron
Mechanical Position Accuracy Z
0.5 Micron
Motor Current
2.8A motor current, currently limited in software to 2.4A
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The motion system of the Modix-120Z uses HIWIN linear rails on the Z-axis for smooth, low-vibration movement. TMC2660 stepper drivers with 256 micro-stepping ensure precise positioning — 10-micron on X/Y axes and 0.5-micron on Z. As an example, the Modix BIG-120Z shows a 1150 x 50 x 50 mm rocket model printed in PLA with a 0.8 mm layer height.
As the fourth-generation Modix 3D printer, the BIG-120Z V4 includes front and side doors with elastic seals, a rear hatch, and a top cover with pneumatic support for easy access. Internal LED lighting improves visibility during printing.
