What NEJE Max 4 has improved

  • 750(X)*460(Y)*45(Z)mm working area, the Y-axis can extend the track by 1030mm. In the 3-dimensional space, it can support simultaneous processing of various items of different thicknesses. Compared with the ordinary 400x400mm frame, the work efficiency is increased by 400 %.
  • It is a revolutionary solution to the fire safety problem of high-power modules. Through the Z-axis layer-by-layer cutting mode and the unique optical cutter design of E80, it can safely cut 17mm pine boards without fire even in the absence of air charge.
  • The cutting efficiency is increased by 200%, which is higher than the cutting efficiency of 40W (optical power) module. The perfect optical design of NEJE E80, by optimizing the beam structure and adopting more complex manufacturing technology, makes the E80 focus power density and beam angle perfect State, in the case of 1 times the difference in power, it can even achieve the same cutting speed, and the incision is smaller, avoiding the problem of trapezoid and XY asymmetry.
  • Realize the wireless offline of lighburn work files, NEJE adopts the built-in virtual command mode combined with Bluetooth technology, wirelessly transmits and controls the professional multi-layer gc files through NEJE, NEJE retains the “One Key Start” function, eliminates the backward sd card mode, and allows the device Work no longer hogs your computer.
  • The standard pen module can draw images through the pen tip, and even give children and beginners the experience of CNC. The pen tip can also be used to draw paths and pre-process advertising materials that cannot be processed by laser wavelengths.
  • 24000mm/min processing speed, faster peak speed than 400mm frame, the combination of Max 4 and NEJE high-performance modules makes the work efficiency reach an excellent state, with NEJE A40640 high resolution and high pulse energy module, it can draw 300x300mm. The work only takes 10 minutes, and the drawing performance of the ultimate art work reaches the peak.
  • X, Y, Z-axis repeat positioning accuracy reaches 0.001mm, XYZ axes are equipped with automatic reset, repeat positioning accuracy after reset can also reach 0.01-0.001mm, X-axis adopts industrial linear track, Y-axis adopts NEJE special design diamond cutter Cutting straight track, with stronger service life and precision.
  • Industrial-grade structural precision, all parts of the new Max 4 machine are calibrated by high-precision industrial master machine, straight line track correction, precise matching of each plane installation direction, so that the module operation is more accurate and stable.
  • The anti-shake pattern design can achieve no wave pattern under such a large-area and light-weight device. NEJE has specially customized alloy materials with different hardness, and through matching and reasonable shock-absorbing design, it can effectively eliminate the jitter troubles during precision drawing.
  • New built-in anti-static discharge design, the device will be more stable and reliable.
  • Compatible with all 12V and 24V modules of NEJE (currently only E80 is a 24V module), realizing the application of different materials and different process requirements.
  • Support vertical work, save space, and flexibly process larger materials.

Machine Guide Videos

Step 1: Structural Install

NEJE Max 4 Unboxing and Assembly (video)

Tutorial for Max 4 Installation (video)



The belt adjuster can also not be installed, the actual error range is very small, just install 8 M6x10 screws directly.


If you don't plan to install the belt adjuster at the beginning, you can reserve a piece of timing belt for later installation of the belt adjuster.


The default has been adjusted, do not adjust too tight, should reduce friction as much as possible.


The elastic support strip can play the role of supporting the cable, Currently it is installed by default and can be ignored.


A-axis expansion requires the installation of the A-axis adjustable current drive module provided by NEJE. NEJE provides a rotary module with adjustable current. You can also use the Z-axis or Y-axis as the rotary axis.

M8 and M7 interfaces can be used to expand the automatic air assist and automatic smoke exhaust system, and the Door interface can expand functions such as emergency stop, safety door, and flame detection. Considering that most users do not need professional expansion functions, NEJE Max 4 is temporarily canceled Automatic solenoid gas valve and relay module configurations. If you need to modify NEJE Max 4, it can be compatible with NEJE 3 Max accessories. The 12V relay module can also work on 24V platform. The solenoid valve needs to be adapted according to the input voltage, and the 12V solenoid valve cannot be used for 24V input, otherwise the motherboard may be damaged due to overpower.

Step 2: Safety Attention


Please do not leave the equipment when the equipment is working, long-term stay may cause the material to burn!

Please wear protective glasses before operation!

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

Please avoid strongly impact on the machine!

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!

Avoid accidental touch by pets!

Step 3: Leveling

Put the honeycomb platform flat to ensure that each position of the platform is the same distance from the laser.

Make sure the plane of the engraved material is at the same distance from the laser, so that the focus position is consistent and the engraved image is burned evenly.


Step 4: Set Default Focus Position

When using the lightburn software to operate NEJE Max 4 for the first time, please enable the Z-axis in the device settings first. After enabling the Z-axis, you can control the focus position on the layer.

After starting the device, the Z-axis will automatically reset, the Z-axis has a high-precision automatic reset sensor, and the position of the Z-axis after reset is Z0.The travel of Z axis is 45mm.

First here will be some definitions for the diagram. Z offset means the distance the Z axis moves,yet the distance the focal point moves. F0:The position of focal point when you assembled the module F1:The position of focal point after the Z axis moves Z offset=The distance from F0 to F1=h1-a h1=the distance from F0 to honeycomb board a=the distance from F1 to honeycomb board

To make it easier to figure out the Z offset,you can set the h1 with a certain number within 45mm For example,with E80,you can adjust the h1=45mm(choose a number you like),then adjust the height of the module with a ruler(h=h1+focal length=45mm+25mm=70mm).

And the a=the thickness of the material-the distance from F1 to the surface of material. For example,if I use E80 to cut a 5mm plywood in 1 pass,you need to make the F1 1mm lower from the surface of the plywood.The a=5mm-1mm=4mm

So simply,you only need to know the h1 and the a. Then you can set different focus on different layers, in the three-dimensional space Give full play to the performance and creation of Light Knife.

If you are using it for engraving, make the F1 on the surface of the board. If you are using it for cutting, you can make the F1 on the surface of the board or make it lower than the surface.For example,for a 17mm pine board, the F1 of the first pass is recommended to be set at: 4mm below the surface of the pine board, the a=17mm-4mm=13mm), according to the characteristics of the module, we recommend you to set the Z step per pass less than 1.5mm. It is determined according to the characteristics of the module.

A40640Ⅱ is a variable-focus high-power engraving tool module. The figure below is the description of the focal length as the main feature. The 15mm position needs to be adjusted manually first.

How to use NEJE Max 4 MOTORIZED Z axis(video)

Another way to pre-focus with NEJE Max 4 motorized Z axis(video)

How to make E80 cut deeper?(video)


NEJE A40640 Laser & Material Database


NEJE E40 Laser & Material Database


NEJE E80 Laser & Material Database

How to quickly find focus by observing low light?

1. Adjust the suitable low light through the software. The NEJE mode can be adjusted in the “Settings” column of the NEJE Win software; the GRBL mode can be adjusted in the “Grbl Configuration” of the laserGRBL software, which has been explained above.

2.Put a gray cardboard on the surface of the white material (such as plywood) as a focus reference to find the precise focus. A fine focal point can be observed through the protective goggles or the shade of the module.


Step 5: About air assist

It is easy for novices to overlook that the inner cavity of the lens may be polluted by air containing water and oil, which needs to be cleaned in time.

Method 1: Do not use air pumps. A40640 and E40 modules (after removing the air mouth) can be carved and cut directly (the thickness is recommended to be less than 3mm, the fir board can be less than 8mm), the built -in fan has the function of smoke exhaust. Generally, This is the most commonly used way and the most portable.

Method 2: Use the oxygen hemers to protect the lens. This method can provide oil -free and water -free gas source protection lens. It does not receive pollution for a long time. It is suitable for long -term carvings and thin density materials for thin materials, but it cannot provide sufficient air pressure to increase MDF The carving and cutting performance of materials such as board, leather, hard paper and other materials.

Method 3: Use the inner diameter of about 1mm metal trachea as an air assist. This method can be provided with lower -cost inkjet equipment to provide more than 30PSI pressure, and small air compressor engine oil and water will not pollute the lens. For MDF boards, leather, hard paper, etc. The cutting of materials has a improvement effect.

Method 4: (suitable for professional players): use standard metal wind mouth+industrial oil and water filter+woodworking air compressor. This method is suitable for long -term multi -frequency operation cutting tasks, with E40 and E80 modules, to enhance the cutting performance of more powerful and portable operations, control through the M8 instruction+electromagnetic air valve The performance is very low. If you are a professional player, you can simply purchase a professional small oil and water filter, but don't forget to release the sewage in the air pump frequently)

Step 6: Software Download

Install Driver(The old Win system needs to be installed, Ignore if driver is already installed)

.NET Framework 4.8 — Win software operating environment, Ignore if win10 and above

NEJE_v6.3.4.exe When using the machine for the first time, please open the NEJE Win software first to check the latest firmware update. The NEJE team will continue to optimize the NEJE firmware and GRBL firmware to provide you with more surprising experiences.

Official website of laserGRBL

Official website of Lightburn

NEJE APP for Android v3.0.3.apk | Download from Google Play Store (Support OS: Android 5.0 or later)

N-Scanner for Android (mainly uses the fast transmission between the engraving materials in your mobile phone and the NEJE Win software. You can directly shoot the image or file through the mobile phone or quickly transfer the content of the photo stored in the mobile phone to the computer for editing and engraving)

"NEJE 3"NEJE APP for iphone, iPad, macbook Support OS: iPhone (iOS 10.0 or later), iPad (iPadOS 10.0 or later), Mac (macOS 11.0 or later)

Step 7: Software operation

Firmware Update

When using the device for the first time, please check whether there is a firmware update. The Neje team will continue to optimize the software and firmware to help you get a more portable operating experience.

Module carving parameter settings, please find the corresponding model model in the menu. Neje provides a typical parameter settings of laser materials.

Start with NEJE Win Software

NEJE V6.1.2:

Choose an image (.bmp .jpg) from: Photo Gallery, My Collection, Load Image from My Computer, Insert Text, “NEJE Scanner”APP:

Cut the range that needs to be engraved:

Set image size:

To adjust the rendering, or not to:

Special effects processing:

Box positioning:

Point positioning, precise control at 0.075mm accuracy:


Start with “NEJE 3” Android APP


Grbl Configuration

How to set low light intensity in GRBL?

Write any value from 0.08 - 0.5, The value means % laser intensity, please proceed with caution,If you modify the parameters and cannot restore the default firmware, you can re-update the firmware in NEJE Win software.

Please refer to the official instructions for laserGRBL. It should be noted that NEJE 3 Max has added M8, M7 and Door to adapt to laserGRBL. In addition to the low-light settings mentioned above, you need to add M8 to the .nc file to control the air to open, M7 controls the exhaust to open, M9 controls them to close.

Start with Lightburn

Initialize lightburn settings:

Area setting: X: 810×460 Y.

Origin X0,Y0: Front Left. Auto “Home”.


How to start M7 in lightburn:

Device Settings

Start G-code: M7

For the use of lightburn software, please refer to the lightburn official documentation. It should be noted that the M8 function needs to be turned on in the lightburn layer setting, and the M7 needs to be manually turned on by referring to the previous method. Lightburn defaults to signal the M9 to turn off the engraving end, and the Door function only works in lightburn mode. Can be stopped, but cannot resume engraving after stopping, NEJE mode and laserGRBL mode can resume engraving after the Door function is activated;

How to Work with LightBurn?

First: prepare your device

1.We recommend baudrate 115200 firmware, so flash your firmware to 115200 baudrate.

2.Make sure your device is at IDLE mode or GRBL mode. How to know my device mode?

Second: prepare lightBurn software by following steps

Run LightBurn then create a device. Note: if there are no ports showed up, please restart LightBurn software.

Now, create device on lightburn by following steps:

After creating device, back to main window of lightburn,

If this showed up, means connection success. Have a nice day!


NEJE Max 4 built -in Neje and GRBL dual firmware. The Neje firmware can be used as a controller. It can be used as a virtual instruction controller. Through Neje software, the .gc file exported by LightBurn through the latest Neje Win software transmits files to the device through wireless ways, or can also Perform the operation directly through the Neje software control .gc file. This is currently the most advanced and more portable control method.

The Neje control board has updated the NEJE traditional “One Key Start” function, which can manually switch mode, positioning, start, suspension, shutdown and other operations.


NEJE Reliable Software Control


In the lightburn/LaserGRBL real-time control mode, NEJE engineers optimize the software to achieve absolutely reliable data transmission through wireless and USB connections. Even if the connection is interrupted midway, the creation will not fail.

NEJE engineers achieve absolute data transmission reliability through a unique bridging solution. Wireless connection and USB wired connection achieve absolute data transmission reliability. Wireless transmission solves the problem of possible data interruption in Bluetooth mode.

Now you can break the USB connection when you need leave the room or it's too late to finish your work today,and then replug when you come back to finish the rest of the work.

This works on NEJE 3 series machine,NEJE 3 Max V2,NEJE Max 4.


GRBL Offline Work


GRBL use streaming transfer protocol that requires continuous data transmission during operation. If the connection is interrupted, the task progress cannot be resumed and it needs to start from the beginning, resulting in material and time waste. We can ensure the reliability of USB transmission for a short period of time, but it is difficult to guarantee the stability of USB connection for long-term tasks(like >= 10hours). Often, Very long tasks often terminate due to link problems. To address this, we have developed Connection Bridge function. Based on GRBL streaming transfer, we have added a retransmission verification function. With this function, the task progress can be resumed by simply reconnecting USB after disconnection. However, the connection bridge function needs to be used with NEJE control software, and Mac users cannot experience this function. Therefore, we have developed the GRBL offline work function.This is the original passage link

What is GRBL offline work

GRBL offline work is a function that sends all the work data to the device at once and saves it, and then reads the internally stored data for operation. In offline work projects, USB connection is not required, and offline work can also be controlled using buttons.


1.No interruptions due to unstable connections

2.Faster work speed for large amounts of data (e.g. image scanning mode)


GRBL offline work is a new feature provided by v2.1.0 firmware. Please Upgrade Your Firmware to the latest version.

GRBL offline work commands

Use the $REC command to enter work content recording mode. In this mode, the device will not execute G commands, but record them. After entering recording mode, you can press the start work button on the control software, and the work content will be quickly sent to and saved on your device's internal storage. Since it does not need to execute commands but save them, the sending process will be fast. Use the $REC command to exit recording mode after the work content is sent. Use the $REC/Run command to start offline work.

How to implement offline work on LightBurn

1.Open LightBurn and connect to your device.

2.Import the work content as usual.

3.In LightBurn Console page,enter the command $REC and press Enter (enter recording mode).

4.Press the Start button in LightBurn. If your work content is small, this process may be completed instantly.

5.In LightBurn Console page,enter the command $REC and press Enter (exit recording mode).

6.In LightBurn Console page,enter the command $REC/Run and press Enter (start offline work).

Note: Step 5 can be skipped, and you can directly start offline work after sending the task. The recording mode will automatically exit.

Use custom buttons to simplify the process

LightBurn provides 6 custom buttons to send custom commands.

Right-click on the button to modify it. You can bind commands to buttons to control offline work more smoothly and naturally:

Advanced: Use the $REC/AutoRun command to start offline work automatically 【Highly Recommend】⭐⭐⭐

This command will automatically start offline work after receiving is completed. You only need to press the button once to start offline work:

This command makes the offline work process more concise and smooth. With just one button click, you can experience the high speed and stability brought by offline work. We strongly recommend using this command for offline work. Note: This command relies on continuous data flow to determine if sending is complete. If the connection is disconnected or the data flow is not continuous during sending, the device may start working unexpectedly.


How to use offline work on LaserGRBL

Step1: Add Custom Button

Step2: Start a offline work

More info about custom buttons please click here.

Frequently Asked Questions

MSG: Not all data is saved, can't start offline work. / Warning! space used, bytes not save.

The work data is too long and all content cannot be saved. Please change the work data. or Buy a new control board at this link,you can get a $20 automatic discount at checkout, new control board have 256MB storage space.

How to cancel sending data during the sending process

Lightburn: Click Stop button LaserGRBL: Click Grbl Reset button (with a lightning icon)

How to pause work in an offline work project

Send the command !

How to resume paused offline work

Send the command ~

How to cancel ongoing offline work

Lightburn: Click Stop button

LaserGRBL: Click Grbl Reset button (with a lightning icon)

Is it necessary to work with the connection bridge for offline work?

Not necessary.

Sending offline work can work with the connection bridge, but it is not necessary because it only requires a stable USB connection during sending.

Can Bluetooth be used to transmit offline work data?

Yes, but it is not recommended to use Bluetooth to transmit offline work data because USB transmission speed is 50 times faster.

Plottery / Drawing pen

1.How to set Z offset for drawing pen?

We suggest you to make the Z offset to be 1-2mm,to shorten the Z axis travel when doing your projects.This will save your time. To make the Z offset to be 2mm,you can simply adjust the height of plotter pen:Material’s thickness+2mm.

2.Which file is better for drawing with a plotter pen?

We suggest you to use DXF.

3.What is the best software to use it?


It's super easy to use drawing pen in Lightburn. You can check the drawing pen tutorials in our YouTube Channel.

Blade and drawing pen for NEJE Max 4 (video)

Curved Surface Engraving

Curved surface carving is a relatively professional CNC function, as it requires you to first create a 3D path file using CAM software. You can execute it through NEJE or lightburn software.

Blade Cutting

The NEJE Max 4 Z-axis sensor has a 0.001mm reset repetitive positioning accuracy and a precise CNC support platform, which makes it possible for the NEJE Max 4 platform to support blade projects. With the blade, foam and heat transfer vinyl with a thickness within 1mm can be cut. NEJE provides blade and cutting pads for auxiliary cutting.

Blade and drawing pen for NEJE Max 4 (video)


The NEJE Max 4 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.

Rotary set-up demo (video)

How to use NEJE rotation axis


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!

Area Extension

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.

Extender 750*1030mm Set-up Demo (video)


NEJE's specially designed 85 ° distortionless 16MP pixel lightburn camera can clearly display details for working areas larger than 1 meter; With this camera, you can easily locate the image on the surface of the sculpted object to improve operational efficiency.

LightBurn Camera Setup(video)

Demo for NEJE CAMERA(video)

Step 1: Make sure you connected the machine to Lightburn,and assembled the laser module correctly.We assembled the Lightburn camera 30 cm from the surface of the bed.

It's suggested you glue this printed pattern image on a solid board.

Step 2:

Step 3:

Step 4:


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.


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.

Maintain the machine regularly(video)


  • Show pagesource