This is not a consumer-grade product. The kit ships with the high-performance NEJE E80 455nm laser module as standard, but it can also accept the NEJE E40, NEJE E30, 24 V 1064 nm, Blade, Drawing Pen, and CNC plasma modules for artistic creation and production. During operation, strictly follow the safety precautions below.

For your first learning session, it’s recommended to practice with the machine while the laser is powered off, using tool heads such as the Blade or Drawing Pen.

Please wear protective glasses before operation！(The E80 module operates at a wavelength of 455 nm. After the device is powered on, the module will emit a low-power laser for positioning indication—this is normal. The E80 module’s air nozzle is equipped with a physical shield; when operating outdoors without an enclosure, always wear proper safety goggles.)

Please avoid strongly impact on the machine！(The device has a built-in MEMS vibration sensor; this safety feature is triggered only when the machine is moved or when ambient vibration becomes excessive, and the detection sensitivity can be customized.)

Laser processing of certain materials can generate dust or toxic gases; always consult the relevant safety data and take appropriate precautions in advance. For long-term use, a DIY enclosure tailored to your application is recommended—ensure effective fume extraction is in place.

Please pay attention when working with flammable materials: improper speed or focal settings, as well as mechanical faults, can ignite the material—especially when cutting thick wood. Engraving mode and thin-material cutting are comparatively safer; stay near the machine whenever you lack experience.

When operating in an open environment, keep pets away and prevent them from coming into contact with the machine.

To expand plasma-cutting functionality, you must control the plasma on/off through an M8-interface relay module. This requires considerable modification skills—proceed with caution.

Please do not touch the laser outlet with your hands. It may burn your hands！

Children under 14 years of age are prohibited from using this product！

Children over 14 years of age need adult supervision when using this product！

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The goal of structural assembly is to unlock the NEJE Max 4 V2’s ultimate mechanical precision, stability, and motion performance. Renowned for its lightweight design, rigidity, and high motion capabilities, the NEJE Max 4 ensures that—once assembled—you can use appropriate parameters to verify device performance and confirm post-assembly reliability. Assembling the Max 4 V2 is simpler than the original model—follow these steps to complete the installation.

Assembly Instructions

1. Motorized Z axis
2. NEJE E80 Laser Module
3. Manual quick-release module height adjuster
4. Safety goggles
5. Short air nozzle – for cutting thick materials.
6. Replacement window lens, resistant up to 1000 °C, specially coated for 455 nm with high transmittance.
7. Wrench set
8. Wrench for adjusting the eccentric nut that sets roller clearance
9. Rail grease / Track lubricant
10. 12 V air-pump dedicated power supply—ensures the control system receives stable, independent power.
11. Air-pump
12. GaN 24V 5A power supply
13. Relay control module (Uses 12–24 V low voltage to switch high voltages up to 5–240 V; operate with caution.)
14. Control box
15. 6 mm air hose
16. Relay 2-pin control cable
17. USB cable
18. Door safety expansion interface
19. Y-axis belt tensioner
20. X-axis belt tensioner

step 1. The X-axis gantry is fully pre-assembled and function-tested; simply slide it into the Y-axis rail. Note the rail is marked for orientation—keep the CNC-machined surface facing up.

step 2. The lower rollers on the rail do not need to contact the frame tightly; a small gap is acceptable.

step 3. The control box and cables are pre-installed and tested; just slide the box into the rail and tighten the screws.

Pay attention to front and rear orientation: use socket-head (button-head) screws at the front and flat-head screws at the rear.

NEJE Max 4 V2 ships with the new motorized Z-axis module by default; you can customize the tool head to suit your process. Use the motorized Z-axis module alone, pair it with the quick-release height adjuster, or run both together—design your own mount via the standard interface!

The new motorized Z-axis delivers 20 mm of physical travel and 17 mm of effective working stroke in an ultra-thin, lightweight yet high-rigidity package. Height can be set manually or driven layer-by-layer through software, giving exact-focus control on fixed platforms and the ability to follow uneven surfaces for 3-D relief engraving, multi-pass cutting, or adding rotary tools, pens, plasma torches and other attachments.

The new motorized Z-axis uses a “no-physical-reset” technique—an algorithm detects motor position to achieve homing. If you prefer not to use the motorized Z-axis, you must flash new firmware to change the default settings; see the following guide for details: Motorized-Z-axis

The new Max 4 V2 features an improved belt-tensioner mounting design: the tensioner comes pre-assembled—simply slide it in, tighten two screws to secure, straighten and lock the timing belt, then manually adjust belt tension on the spot.

Install the timing belt as shown; this arrangement increases belt-wrap angle, lowers the center of gravity, and improves both response and vibration resistance.

1. Constant-tension timing-belt adjuster: simply compress the spring① by about 2 mm. Set constant tension manually by turning knob ③.

2. We only need to set the spring tension once; within the belt’s service life, simply loosen and retighten screw ② to restore tension after the belt ages.

3. Installing the new Y-axis belt tensioner is extremely simple—just tighten screw ⑤ and you're done.

4. ④ is the magnetic leveling structure.

Wiring is the final step. Max 4 V2 uses 15 × 20 mm quick-release cable chains—just lay the wires and air tube inside; plenty of spare room is reserved for future add-ons. Follow the illustration to finish the build. Tip: at the front of the X-axis where the Y and X runs meet, zip-tie both the cable and the tube so everything stays neat and rock-solid.

A. Safety key—turn right to enable.

B. Push-to-stop emergency button: press down to pause; press again to pop up and resume normal operation.

C. C1 user-defined button:

Long-press at power-up toggles between NEJE and GRBL mode.
One press: home the machine.
Next press: frame/outline the job.
Next press: start work.
Next press: pause work.
C1 is mainly used for stand-alone (offline) control.

1. DC 24 V 5 A; 12 V input is accepted, but standard 24 V is recommended to unlock full motion performance. Input voltage ① must equal module voltage ③④.

2. USB cable, The kit includes a high-quality, shielded USB cable. If you mainly cut and rarely engrave images, you can skip the USB connection and use NEJE’s built-in wireless instead—connect directly or via NEJE Bridge to LaserGRBL or LightBurn.

3. 4-pin PH2.0 laser output connector, Connection required.

4. 2-pin PH2.0 laser auxiliary power(Reduce current load to prevent power-line heating.), Connection required.

5. 4-pin PH2.0 X Stepper Motor​, Connection required.

6. 4-pin PH2.0 YR Stepper Motor​, Connection required.

7. 4-pin PH2.0 YL Stepper Motor, Connection required.

8. 4-pin PH2.0 Z Stepper Motor, Connection required.

9. “DOOR”: Connection required. Can be used to expand emergency-stop, safety-door, flame-detection and other safety functions.

10. “M7” : Can be left unused; typically reserved for expanding control of exhaust equipment.

11. “M8“: Connect to the relay module for air-assist control.

12. ”C1“ : Offline control, Connection required.

13. Independent A-axis port, 5-pin, supports NEJE R6 and is pre-configured for NEJE Max 4 V2—plug-and-play. The R6 comes with a long cable for direct connection. To connect third-party stepper-motor devices, purchase the 5-pin-to-4-pin stepper-driver cable separately (available at NEJE.SHOP). The independent A-axis port can also be expanded for advanced functions, controlled via Z-axis commands during special processes.

14. Bluetooth antenna.

Note: NEJE Max 4 V2 uses a “no-reset-button” homing technology—simply stick a 2–5 mm sheet of EVA or silicone at the travel limit and the axis will home smoothly and accurately. It’s more reliable and maintenance-free than the cluttered wiring and limited life of traditional mechanical switches.

NEJE Max 4 V2 uses a relay module to independently control the air pump; normally, you connect it to the mainboard’s M8 port and let NEJE or LightBurn decide whether to enable air-assist for each layer.

NEJE Max 4 V2 supports the knife-edge platform, honeycomb platform, and the expanded-area knife-edge platform kit. During actual operation, you’ll encounter tasks—like using the Blade or Drawing Pen—that require a flat surface and expanded workspace.

Once you set the platform height, you can preset the motor-driven Z-axis height and laser focus, making everything fully automatic from that point on.

Once the workstation setup is finalized, simply configure the fixed initial laser position. This eliminates the need for repeated focal adjustments during subsequent operations. For example, as shown in the diagram, h₁-25represents the fixed focal point for the E80 laser module (non-adjustable), while h₂denotes the maximum travel range of the electric Z-axis. Users may customize h₁to any height within or beyond 17mm (using 17mm as an example here).

When working with materials, set the Z-offset parameter in software for each layer. For instance:

​​3mm material carving/cutting​​: Position the focal plane on the surface by setting Z-offset = 17mm (h₁) – 3mm (thickness) = 14mm.

​​5mm material carving​​: Typically place the focal plane on the material surface (Z-offset = 17mm – 5mm = 12mm).

​​5mm material cutting​​: Optimal focus is slightly above the center (Z-offset = 17mm – 3mm = 14mm).

For ​​3D engraving on 10mm material​​, incrementally lower the Z-axis per pass (custom Z-offset per depth). For ​​10mm cutting​​, use multi-pass strategies like:

​​2-pass cutting at 500mm/min​​:

First pass: Focus at 8mm (Z-offset = 17mm – 8mm = 9mm).

Second pass: Descend 1mm

This principle applies to both ​​10mm carving​​ and ​​thick-material cutting​​, requiring tailored focal adjustments based on material behavior and desired outcomes.

Both NEJE software and LightBurn support Z-offset adjustments, but LightBurn takes it further by enabling bidirectional vertical control through positive/negative Z-offset values. Users can delve deeper into customization, tailoring focus control to real-world applications and unleashing creative possibilities for precision and artistic expression.

Download

Software Download

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Tutorials

How to work with lightburn (Change the work area to 700 × 460 mm)

How to Connect Lightburn or Lasergrbl via Bluetooth

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We usually test the smoothness of mechanical motion by drawing circles, and use rapid straight-line scans to check for wavy lines—this helps us assess equipment stability. You can start with this simple method to evaluate the machine’s mechanical condition. If you encounter different results, we’ll guide you through the corresponding troubleshooting steps.

Don’t worry—NEJE engineers have designed all the mechanical tuning to be ​​simple, reliable, and easy to maintain​​.

OTA Firmware Update

How to update neje device firmware

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Motion Parameter Adjustment

​​Recommended Translation for Technical Parameters​​

​​System Default Acceleration:​​

​​250 mm/s²​​ (ensures smooth operation and high-quality imaging when using tool heads, pen tips, or laser-based image generation at ​​1200 mm/s (72,000 mm/min)​​)

​​Fill Mode Optimization:​​

​​X/Y Axis Acceleration:​​

​​800 mm/s²​​ (refer to the parameter setting at ​​1000 mm​​ in Figure 1 for enhanced engraving efficiency)

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Quick Commands

“REC” Receive Files​

Send files without starting operation, or send files and directly begin operation. Users can customize shortcut buttons in laserGRBL and LightBurn software to streamline workflow.

$REC/AutoRun $REC Auto/Run

$REC/AutoStart $REC Auto/Start

The 'REC' function is a file transfer feature specially designed by NEJE firmware for LaserGRBL and LightBurn software. Traditional LaserGRBL and LightBurn workflows require maintaining real-time data communication between the computer and the device—users cannot shut down their computers during operation, as the process occupies the computer continuously. The 'REC' function resolves this issue by first transferring the complete file to the device, after which users can initiate the job either through the software or the device's physical button. Once started, the computer can be turned off, allowing the device to operate independently.

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The NEJE series devices support M8, M7, and Door function expansion. We usually use M8 to control automatic air assist, which is used to assist in cutting or protect the lens. It can automatically control the gas supply when the equipment starts and ends. You can connect M8 through a relay switch or electromagnetic air valve. The M7 function can be configured in the lightburn software and NEJE software to check whether it is enabled. Usually, we use M7 to expand the automatic smoke discharging system, and we usually use relay modules to control the power supply of smoke discharging equipment. The Door function mainly expands safety functions. NEJE engineers have designed expansion functions for flame sensors, emergency stops, and safety doors. The expansion of the Door function can help prevent safety issues to a certain extent By expanding the interface, you can obtain a more automated device that greatly improves operational efficiency and experience in the actual operation process.

Please select the corresponding voltage air valve according to the input power supply voltage, otherwise the functions of the main board M8 and M7 may be damaged！

For detailed updates on M8 and M7 settings, please refer to the software documentation page.

①. Connect the relay module and control it via the M8 interface.​​
②. Supply oil-free, water-free compressed air at high pressure.​​
③. Integrate into the existing air assist system.​

​High-pressure air assist is primarily used in high-volume cutting applications. By filtering oil and water from compressed air, the high-pressure gas can be integrated into a low-pressure system by incorporating the electromagnetic valve assembly mentioned above, enabling a dual-gas-assist setup (high-pressure + low-pressure). For users with lighter cutting demands, this component may not be necessary—it enhances cutting quality and efficiency only when needed.

A standard air assist kit primarily protects the lens. Under normal circumstances, a cutting speed of 500 mm/min is sufficient for materials up to 3 mm thick. High-pressure air assist (≥30 psi) improves efficiency, reduces carbonized residue during MDF and ≥3 mm wood cutting, and yields cleaner edges.

The characteristic of the NEJE Max series equipment is that you can obtain industrial grade large-area technology at a lower cost, and the new Y-axis extension track is calibrated using a CNC industrial master machine and diamond cutting tools for linear correction. Calibrating the horizontal tolerance of extruded profiles for long dimensions allows for higher accuracy and longer lifespan of large-area equipment, as well as higher work efficiency. Projects such as large-area engraving and wall art are easier to perform.

NEJE engineers have improved the hardness and material of the frame material, and adopted innovative shock-absorbing design to make the equipment lightweight while achieving perfect drawing effects.

The NEJE Max 4 V2 is a standalone A-axis that can be easily configured with the rotation axis function by setting it in the lightburn software. You don't need to use the Y, Z axes as rotation axes When configuring the rotation axis, you need to first position the Y axis to the specified position, and then start the A axis. You need to remember that when using the A axis, you need to multiply the actual object diameter by a fixed parameter as the input diameter.

How to use rotary NEJE R6 with NEJE Max 4 V2

​​E80 stands out for its unmatched blend of ​​productivity​​ and ​​artistic creativity​​, delivering highly efficient processing for large-format or batch projects. From ​​large-area wood deep engraving​​ and ​​3D relief carving (high material removal)​​ to ​​plywood cutting (3mm @ 900mm/min)​​ and ​​image engraving (1000mm/s)​​, its advanced lens technology enables a ​​90-micron high-energy cutting head​​—the ultimate tool for achieving precision and creativity in both artistic and industrial applications.​

consistently reliable, high power with excellent detail

top-tier, high-resolution image engraving

updating

updating

Enclosure design must account for key factors such as operational convenience, functional requirements, safety, noise reduction, stability, and airflow. These considerations are shaped by the specific application and environment. Users can DIY tailored solutions optimized for their unique usage scenarios. NEJE will also continue to provide a variety of reference solutions for users.

Hello,I have made some small improvements to my Elena's Box, handles to lift the honeycomb table, red corners of the drawer so that they are easily visible, logo on the inside, change of color of the smoke extraction collector, although I have some doubts about whether to install linear actuators or not, the ones that would work well are quite expensive and perhaps with a simple counterweight I will also achieve agility to open and close the lid. What do you think? https://youtu.be/556GoL-P2DE

NEJE provides an external frame, which not only can collect exhaust gas and fire protection functions, but also can install cameras when the area is expanded.

Visual Camera Installation Tutorial

Why Stepper Motors Lock & How to Disable?

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What improvements does the Max4 V2 offer compared to the Max4?

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Why is the cooling system of a diode laser module designed to be external?

Dust cleaning: regularly clean the dirt and dust on the tracks and wheels, and check the tightness of the timing belt.

Lens cleaning: Smoke from engraving or cutting, or oily air sources may contaminate the lens. After contaminating the lens, the lens will be broken due to the high temperature of the laser. It is recommended to use alcohol to clean the lens surface frequently;

Moisture-proof storage: If your laser machine is not used for a long time, we suggest adding some anti-rust oil to the metal places such as the screws and bearings of the machine to avoid metal rust, and store it in a dry environment.

Dear customers, If you have any questions or concerns, please do not hesitate to contact us.We would love to hear your suggestions, if you have any after-sale issues,you can contact us on:

1.Chat Online or Customer Service Contact Email: service@neje.shop

Product ordering and service-related inquiries.

Service time:

US time: 6:00(PM)- 3:30 (3:30 AM) UTC/GMT -5:00

Hong Kong time : 9:00(AM)-18:30(PM) UTC/GMT +8:00

Europe time： 3:00 (3:00 AM)- 12:30 (12:30 PM) UTC/GMT +2:00

Closed on Saturday and Sunday!

2.Forum

You can quickly resolve your issues with our online customer service, saving valuable time. For more specialized technical issues or after-sales support, you can also submit your fault details through the forum – preferably with a video attached via email. Our NEJE product experts and engineers will diagnose and confirm the issue in the forum, providing you with more professional support.

3.FB Group

This group is primarily for creators, artists, and NEJE staff to exchange project creation content, share insights, and enhance collaboration.

4.Bulk Purchase & Custom Product Inquiries – Manager's Email: liya@nejetool.com

5.CEO Email: whh@trusfer.com (Complaints & Product Service Suggestions)

NEJE%20MAX%204%20V2_V1_manul.pdf