The Modix BIG-120X V4 is a large-format, self-assembly FDM 3D printer with a 1,200 × 600 × 640 mm build area, designed for professionals in prototyping, mold making, R&D, and restoration. It features a modular design for upgrades, including IDEX, and a Griffin print head with a custom Bondtech extruder and 500°C hotend for compatibility with standard and industrial filaments. Automated calibration handles bed leveling, gantry alignment, and Z offset, while Nema-23 motors enable speeds up to 350 mm/s. Offering industrial performance at a competitive price, it’s ideal for printing full-scale models with reduced post-processing and high reliability.
The Modix BIG-120X V4 delivers 0.01 mm XY resolution and 0.5 micron Z-axis precision, ensuring accurate results across its large build volume.
This time-lapse shows the Modix BIG-120X achieving smooth, precise prints using a quadruple Z-axis with four stepper motors and lead screws, plus HIWIN linear rails for added stability. Trinamic TMC2660 drivers reduce noise and vibration, improving surface finish. It prints detailed models at 100 mm/s and travels up to 350 mm/s for efficiency.
Upgraded mechanics boost the BIG-120X V4’s print quality. The Griffin printhead, with a Bondtech extruder and Modix hotend, ensures consistent extrusion with minimal stringing. A 200-point automatic bed leveling system secures first layer adhesion across the build surface.
With the IDEX system, the BIG-120X V4 handles complex prints with complex internal geometries. It maintains chamber temperature during material changes, preventing thermal shrinkage and enhancing print quality.
The productivity of the Modix 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 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.
Case Study: Vital Auto, UK automotive design studio operates a farm of 16 Modix printers including BIG-60, BIG-Meter and BIG-120X 3D printers, creating full-scale 1:1 prototypes for major OEMs and startups. They eliminate assembly requirements by printing large-scale parts in single pieces, operating 24/7 with their 3D printer fleet. The below example is fully 3D printed.
Case Study: Aptera Motors, an electric vehicle startup, accelerated development of its ultra-efficient car using rapid prototyping for complex parts in Alpha builds. The technology supported their 1,000-mile range, solar-powered vehicle, helping them reach 44,000 pre-orders and prepare for first production.
Case Study: R. Kulas (Medical Engineer), healthcare technology engineer designed 3D printed remote control panel for CT scanners to protect medical teams during COVID-19 pandemic. The large plastic control panel incorporates sensors and LED lights enabling remote patient instruction during scanning procedures while maintaining safe distance from potentially infected patients.
Case Study: Emerge Prosthetics Arts, prosthetics manufacturer achieved "lights out" production capability serving clients across the USA with tailor-made prosthetic solutions. They can print 30 objects simultaneously and run continuously all week while only replacing filament as needed, completely eliminating complex part assembly issues.
The Modix BIG-120X V4 supports over 15 filament types — including standard, engineering-grade, and composite materials — thanks to its 500°C Griffin printhead with a Bondtech extruder and Modix hotend. Compatible with any 1.75 mm filament, it offers full material flexibility. With the optional IDEX system, it enables multi-material printing with dedicated supports, ideal for complex geometries.
Printing with breakaway support filament
Printing with soluble support filament (PVA)
PETG 3D Print Sample:
ABS-X Fan Intake Adapter: 250 × 250 × 415 mm, 43-hour print, 650 g.
PETG 3D Print Sample: Chuck Taggart, Custom motorcycle parts creator developed innovative Harley-Davidson Road Glide speaker housings and created the world's first hardtop convertible for Jeep vehicles. The hardtop printed in PETG material weighs under 35 pounds (16 kg), measures less than a foot thick, and incorporates tungsten zero-profile hinges with integrated recovery boards.
Polycarbonate-CF 3D Print Sample: Forte3D produced the world’s first 3D-printed carbon fiber cello with a patent-pending design, earning orders from Yo-Yo Ma and musical institutions. They use polycarbonate filament for structural parts like the fingerboard and tailpiece, finished in black to match carbon fiber panels, with the Z-seam hidden near the bottom for performance aesthetics.
The Modix BIG-120X V4 offers a 1,200 x 600 x 640 mm build volume (460.8 liters), nearly doubling the capacity of the BIG-60 V4. Its wide XY footprint suits flat, large components while providing enough height for most industrial needs.
Shown: the Modix BIG-120X IDEX setup; the IDEX add-on is not included in standard configuration
Compared to MAKEiT and BigRep, the Modix Big-120X delivers top value and throughput with a 1200×600×640 mm build volume, optional enclosure and IDEX, and up to 160 mm³/s (500+ g/h) extrusion with the Griffin Ultra; the standard Griffin reaches 30 mm³/s (≈94 g/h). Its hot-end components are rated to 500 °C (tested to 340 °C), and while it's a self-assembly kit, on-site assembly and training are available via Top3DShop. The MAKEiT 2×4+ focuses on capacity and shop readiness with the largest volume (1400×650×800 mm), a built-in enclosure, 450 °C extrusion for abrasive materials like nylon-GF/CF, and closed-loop Layer Shift Prevention technology to prevent layer shifts; it ships fully assembled after a 100-hour test print. Avoid the BigRep Studio G2 because you will pay the highest price for the worst feature set.
| Specification | Modix Big-120X | MAKEiT 2×4+ | BigRep Studio G2 |
|---|---|---|---|
| Price (USD) | $12,000+ | $30,000+ | $60,000+ |
| Build volume (mm) | 1200 × 600 × 640 | 1400 × 650 × 800 | 1000 × 500 × 500 |
| Enclosure / chamber | Enclosure optional (closed ACP panels); no active heated chamber | Built-in enclosure; no active heated chamber | Fully enclosed, no active heated chamber |
| Extruders / IDEX | Single (Griffin); IDEX optional for Gen4 printers | Not specified; IDEX not mentioned | Dual direct-drive (SDX); IDEX not specified |
| Max nozzle temp (°C) | Up to 500 (components rated); tested 340 | Up to 450 | 280 |
| Max bed temp (°C) | 110 (with enclosure) | 110 | 100 |
| Volumetric flow (mm³/s) | 15 (High-Res) / 30 (Standard) / 45–60 (High-Flow) / 160 (Ultra) | Not specified | Not specified |
| Rated output (g/h) | 46.9 (High-Res) / 93.8 (Standard) / 140.6–187.5 (High-Flow) / >500 (Ultra) | Not specified | 130 |
| Assembly | Self-assembly kit (videos & 3D models) | Fully assembled & tested for 100 hours before delivery (California) | Fully assembled |
The Modix Big-120X provides 4 distinct printer control methods.
1. 7-Inch Touchscreen Interface
The BIG-120X features a 7-inch Duet3D PanelDue touchscreen with an emergency stop button, mounted on an adjustable tilt bracket for ergonomic control (optional add-on).
2. Remote Web Interface (Wi-Fi)
The BIG-120X includes a Duet2 Wi-Fi controller for remote operation via a web interface, allowing users to upload G-code and manage prints from any networked computer.
3. Direct USB Connection
The BIG-120X supports USB connectivity for file transfer and control via slicing software. Users commonly use Pronterface for setup, calibration, and pausing the printer during operation.
4. SD Card Slot
The BIG-120X includes SD card support for standalone printing without a computer, allowing direct G-code file loading.
The Duet3D controller powers all control methods, offering a professional interface with standard Wi-Fi.
The Modix BIG-120X V4 offers 3 connectivity options via the Duet 2 Wi-Fi controller: USB for direct connection, an SD card slot for standalone printing, and built-in Wi-Fi for remote control through Duet’s web interface.
The integrated web interface allows full printer control from any networked device without extra software. Users can upload files, monitor prints, adjust temperatures, and manage functions via browser on a PC, tablet, or smartphone.
The BIG-120X V4 includes a 7-inch color touchscreen (800 × 480 resolution) for direct machine control. An optional tilt mount improves viewing angles, especially during automated calibration.
For regulated environments where Wi-Fi connectivity is prohibited, the Duet3D Ethernet board can be ordered and installed as an alternative networking solution.
The printer supports any slicer, including Cura, Simplify3D, and PrusaSlicer. The BIG-120X V4 includes slicing profiles for Cura, Simplify3D, and PrusaSlicer, available in Modix’s customer zone with optimized settings tailored to the printer.
The Duet 2 Wi-Fi controller enables full remote control via a browser-based interface, with no extra software needed. Users can upload files, monitor progress, adjust settings, and manage the printer from any networked device. The system supports third-party monitoring tools like OctoPrint, Mainsail, Fluidd, and SimplyPrint for enhanced remote control.
The Modix BIG-120X V4 has a heavy-duty industrial design with dimensions of 1,556 x 1,060 x 1,506 mm and a 170 kg shipping weight. Its black metal frame with red accents highlights its industrial focus. Sold as a self-assembly kit, it gives users deeper machine knowledge and easier customization, maintenance, and upgrades.
The optional enclosure uses 3mm aluminum composite panels with polycarbonate doors and lid for visibility and access.
The motion system of the BIG-120X V4 uses HIWIN MGW9 linear guides on the X and Y axes for precise movement. The Z-axis features smooth rods by default, with an optional HIWIN MGW9 upgrade.
The X and Y axes use 9mm Gates GT2 timing belts with fiberglass reinforcement, while the Z-axis features SFU1204 ball screws with 2:5 belt gear reduction.
The fourth-generation BIG-120X uses upgraded NEMA23 motors for improved performance. Its bed moves via four ball-nut screws, each driven by a dedicated stepper with belt gearing for precise positioning. The system offers 4 x 4 x 0.5 micron resolution, with print speeds up to 150 mm/s and acceleration up to 1000 mm/s².
The build platform of the BIG-120X V4 uses a 6.35mm Alcoa Mic-6 aluminum plate for excellent flatness and heat conduction.
The BIG-120X V4 uses a BL Touch probe for automatic bed leveling, measuring 200 points to correct surface irregularities. It also includes automatic tilt leveling and Z offset calibration for precise first-layer adhesion. Users report calibration takes under five minutes using the included 3mm metal tool.
The BIG-120X V4 comes standard with the Modix Griffin High Flow hotend and a Bondtech BMG direct drive extruder with 3:1 gearing. It supports 1.75mm filament, with optional conversion to 3mm.
The BIG-120X V4 features an external spool mount for standard 1.75mm filament as part of its filament handling system, with the default mounting configuration supporting spools up to 3kg. The Spool Shelf optional upgrade extends capacity to 8kg, utilizing bearing rollers to reduce friction and facilitate smooth filament feeding to the extruders.
The BIG-120X V4 supports external spool mounts for spools up to 8 kg. An 8 kg spool shelf add-on offers dedicated storage for industrial-scale printing.
The fourth-generation BIG-120X includes a filament feed sensor as standard, detecting clogs, runout, and under-extrusion to prevent print interruptions. IDEX setups add a second sensor and Y-axis motor for independent dual-extruder control.
The BIG-120X V4 uses a Duet2 WiFi 32-bit controller with a DueX5 expansion board for advanced motion control and expanded I/O. The dedicated WiFi module enables stable remote access, and the DueX5 automates all calibration modes previously limited to Modix flagship models.
The DueX5 expansion adds TMC2660 drivers, heater and fan outputs, and thermistor inputs, enabling IDEX, auto bed leveling, and multi-zone temperature control. Users can upload G-code and manage the printer remotely via a web interface or locally with the 7-inch touchscreen, with full monitoring for large-format prints.
The electrical system of the BIG-120X V4 separates DC and AC power. A Meanwell 24V/280W supply handles DC electronics, while two 1,370W silicone pad heaters run on direct AC, with 110V or 230V versions depending on region. In North America, the bed heaters require two dedicated 15A outlets. Power cords are provided with plugs matching the destination country's standards.
The Modix BIG-120X V4 includes:
The Modix BIG-120X V4 ships as a complete self-assembly kit with all required components, tools, and documentation.
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.
The Modix large 3D printers support over 20 upgrades.
| Accessory | Function | Price (USD) | Image |
|---|---|---|---|
| Enclosure | ACP panels with front doors and a top lid provide temperature stability and dust protection, helping reduce warping and contamination when printing ABS and engineering materials. | 2,688.00 |  |
| Griffin Ultra Printhead | Delivers over 500g/hour extrusion with a 1.6mm nozzle, dual cooling fans, and 160mm³/s flow rate at 1.2mm layer height for fast large-part production. | 1,232.00 |  |
| Griffin High-Flow Hotend | Increases material deposition for standard prints while supporting Volcano nozzles and 0.3–1.2mm layer heights. | 392.00 |  |
| Spare Griffin Hotend | Includes replacement printhead assembly with heat break, temperature sensor, and heater cartridge for maintenance continuity. | 201.60 |  |
| IDEX Dual Printhead | Enables independent dual extrusion with automatic nozzle parking outside the print area, supporting water-soluble supports and clean multi-material transitions. | 1,232.00 |  |
| IDEX Calibration Tool | Enables hands-free nozzle height alignment via automated calibration for precise dual-extruder setup. | 280.00 |  |
| Soluble solution – 1000g | Water-mix solution for dissolving supports made from soluble filament. Net weight: 1000 grams. | 39.20 |  |
| Soluble filament – 500g | Soluble filament for printing removable support structures. Net weight: 500 grams. | 112.00 |  |
| Filament Dryer | Automatically dries hygroscopic materials up to 8kg with temperature control to ensure optimal printing conditions. | 1,792.00 |  |
| Griffin Brass Nozzles Pack | Support standard thermoplastics with Volcano-style threading for broad material compatibility. | 67.20 |  |
| Griffin Hardened Steel Nozzles Pack | Pack of hardened steel nozzles for abrasive filaments. Maximum operating temperature: 450°C. | 190.40 |  |
| Magnetic Bed | A flexible spring steel build surface with PEI coating for easy part removal and reliable first-layer adhesion. | 1,344.00 |  |
| Extra PEI Sheet |
A replacement build surface layer with 3M high-temperature adhesive backing. |
168.00 |  |
| Active Air Filter | Air filtration unit with a pre-filter, HEPA filter, and activated carbon filter, for dust, fine particles, and fumes. | 1,512.00 |  |
| Casters | Caster wheel set with adjustable leveling feet, for moving the printer and leveling it in place. | 168.00 |  |
| Tilt Screen | Angled display upgrade that includes an emergency stop button and a front power switch. | 280.00 |  |
| 8kg Spool Shelf | Spool shelf upgrade for holding filament spools up to 8 kilograms. | 448.00 |  |
| Power Distribution Unit (PDU) | Integrated power distribution unit for centralized power connection and cable management. | 1,008.00 |
|
| Z-Axis HIWIN Rails | Z-axis upgrade that replaces smooth rods with HIWIN linear rails for higher motion precision. | 1,008.00 |  |
| Basic Maintenance Kit | Basic maintenance kit with essential spare parts for printhead and motion system service. | 336.00 |  |
| Advanced Maintenance Kit | Advanced maintenance kit with a comprehensive set of spare parts, including belts and motors, for long-term maintenance. | 1,568.00 |  |
| Filter Spares Set | Replacement filter set for the Active Air Filter unit, including pre-filters and a HEPA and carbon filter. | 336.00 |  |
The Modix Big-120X requires 9+ maintenance procedures to maintain consistent dimensional accuracy and reliable extrusion.
Daily maintenance
Weekly maintenance
Monthly maintenance
Semi-annual maintenance
Due to its large scale, the printer requires ongoing calibration of the motion system, bed leveling, and temperature controls to maintain consistent print quality across the large build volume.
The Modix BIG-120X V4 includes a 12-month warranty (extendable by 2 years) covering non-degradable parts and electronics, excluding consumables like PEI sheets and nozzles. Lifetime technical support is provided via email within 5 business days (Sunday–Thursday, 09:00–18:00 GMT+2), with video support available for complex issues. Customers also gain access to an online portal with 3D assembly guides, calibration instructions, and customization resources. For those who prefer not to self-assemble, professional assembly by Top3DShop is available as a paid service.
Full warranty terms: https://www.modix3d.com/terms
| Service Package | Description | Price (USD) |
|---|---|---|
| 3-Hour Call with Modix 3D Technicians | Remote optimization support for design, slicing settings, and material selection; includes 3 hours of video calls with Modix technicians. | 500 |
| 1-Year Warranty Extension | Extends Modix manufacturer warranty by 12 months beyond the standard warranty period. | 750 |
| 2-Year Warranty Extension | Extends Modix manufacturer warranty by 24 months beyond the standard warranty period. | 1,500 |
| Assembly Services by Top3DShop (Off-Site) | Off-site assembly of the Modix kit per official manual + calibration (bed compensation ≤2 mm corner-to-corner), IDEX XY calibration (if applicable), test prints (cube/mesh), photo/weekly progress reporting, and delivery of assembled unit (per agreement terms). | 10,000 |
| Assembly Services by Top3DShop (On-Site) | On-site assembly and commissioning at customer facility; includes the same assembly/calibration/test-print scope plus on-site handover/training and verification as described in the agreement. | 15,000 |
The Modix BIG-120X V4 base configuration is available for $8,960.00, offering strong value for a professional large-format printer with a 1,200 x 600 x 640 mm build volume. The modular design supports upgrades such as the IDEX system (+14%), polycarbonate enclosure (+30%), and Griffin Ultra printhead (+14%). For custom configurations, shipping, or volume discounts, contact Top3DShop for a personalized quote.
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