Lasergravierer-Blog

During framing, the laser is typically used as a visual guide to outline the working area. If no laser output is observed during this process, it is usually due to basic setup or configuration issues rather than hardware failure.

The following are the most common causes and corresponding solutions.

1. Lens Cover Not Removed

Before operating the machine, ensure that the protective lens cover has been removed from the laser module.

If the cover is still in place, the laser beam will be blocked, making it appear as if there is no laser output.

To resolve this issue:

• Check the laser head for any protective cover
• Remove the lens cover before starting framing or engraving

This is a common oversight, especially for new users or after maintenance.

2. Laser Not Enabled

When using LightBurn, click the top menu button and enable the “Laser on when framing” option, then click OK.

Conclusion

No laser output during framing is typically caused by a remaining lens cover or a disabled software setting. By ensuring that the protective cover is removed and the appropriate option is enabled in the software, users can restore normal framing functionality.

Proper setup and configuration checks before operation help ensure accurate positioning and a smoother engraving workflow.

If the Z-axis of the Nano machine fails to lift properly, it is often related to a malfunction in the column control board. Replacing this component can restore normal Z-axis movement. Follow the steps below carefully to ensure a safe and correct repair process.

1. Remove the L-shaped Support Bracket

Begin by removing the L-shaped support bracket from the machine.

• Turn the hand-tightened nut counterclockwise
• Carefully detach and remove the L-shaped support bracket

This step provides access to the internal structure of the column.

2. Remove the Column Housing

Next, remove the column housing to access the internal components.

• Use a hex wrench to remove the 12 screws located on both the inner and outer sides of the column
• Remove the positioning plate and the column cover
• Carefully take out the column housing

This exposes the internal control board assembly.

3. Disconnect and Remove the Column Control Board

Proceed to remove the faulty column control board.

• Disconnect the cables on both sides of the column control board
• Use a hex wrench to remove the 4 screws securing the board
• Carefully lift out the control board

Take care to note cable positions for reassembly.

4. Remove the Rear Screws

• Remove the 2 screws located at the back of the column control board
• Fully detach the control board from the structure

At this point, the faulty board can be completely removed.

5. Install the New Column Control Board

• Place the new column control board into the original position
• Secure it using the appropriate screws
• Reconnect all cables exactly as they were before

Ensure all connections are firm and correctly aligned.

6. Reassemble the Column Housing

• Reinstall the column housing
• Place back the positioning plate and column cover in order
• Use a hex wrench to tighten all screws securely

Proper reassembly ensures structural stability.

7. Reinstall the L-shaped Support Bracket

• Reattach the L-shaped support bracket
• Tighten the hand-tightened nut to secure it in place

Conclusion

A Z-axis lifting malfunction on the Nano is commonly caused by a faulty column control board. By carefully replacing this component and following the correct disassembly and reassembly steps, you can restore full Z-axis functionality.

Always ensure all screws are properly tightened and all cables are securely connected to prevent future issues and maintain stable machine performance.

If your Nano Pro laser engraver suddenly stops during engraving, it is usually related to USB connection issues or a machine safety alarm. This guide explains the common causes and how to fix them quickly.

1. USB Data Connection Loss

A loose or damaged USB cable can interrupt communication between your computer and the laser engraver, causing the job to stop mid-process.

How to fix:

• Reconnect the USB cable securely
• Replace the cable if it is worn or unstable
• Ensure a stable connection before starting engraving

2. Machine Alarm Triggered

The machine may automatically stop when a safety alarm is triggered, such as vibration, tilting, or unsafe operating conditions. When this happens, the red indicator light will turn on.

How to fix:

• Remove the cause of the alarm (e.g., stabilize the machine)
• Wait for the alarm to clear and resume operation
• If the alarm persists, connect to your computer
• Open LightBurn or LaserBurn and enter $X in the console to reset the alarm

Conclusion

If your Nano Pro stops during engraving, the issue is most commonly caused by a USB connection failure or a triggered safety alarm. By checking the cable connection and resetting the alarm using $X, you can quickly restore normal operation and continue engraving without further interruption.

👉 Keeping your connection stable and ensuring a safe working environment will help prevent most engraving interruptions.

If you are experiencing connection issues when using LaserBurn via IP with your Nano Pro laser engraver, the problem is usually related to network settings or device conflicts. Follow the troubleshooting steps below to quickly restore the connection.

1. Network Configuration

The Nano Pro and your computer must be connected to the same network for IP communication to work properly. If they are on different networks, the connection will fail.

How to fix:

• Ensure both devices are on the same Wi-Fi network
• Configure or verify the network settings via the machine screen or mobile app
• Restart the router or reconnect devices if needed

2. Device Already in Use

The Nano Pro only supports one active IP connection at a time. If the machine is already connected to another device or software, new connections will be blocked.

How to fix:

• Disconnect the machine from any other software or device
• Close any previously connected LaserBurn or LightBurn sessions
• Reconnect and try again

Conclusion

LaserBurn IP connection issues on Nano Pro are typically caused by network mismatch or multiple active connections. Ensuring both devices are on the same network and confirming the machine is not already in use will resolve most problems quickly.

For stable performance, always maintain a consistent network connection and avoid running multiple IP connections simultaneously.

• Lightburn: Click the button, select this port from the COM port list, and set

961200 baud rate.

Conclusion

Most Nano Pro connection issues are caused by wrong cables, missing CH340 drivers, incorrect port selection, or baud rate mismatch.

By ensuring a proper data cable, installing the correct driver, selecting the right COM port, and setting the baud rate to 961200, you can quickly restore a stable connection and start engraving smoothly.

The Nano Duo comes equipped with a built-in camera that helps users precisely locate materials and designs before engraving.
In LightBurn, if you wish to use the camera feature, it must first be calibrated and aligned. The steps are as follows:

1. Focusing the Nano Duo

Before performing camera calibration and alignment, make sure to focus the Nano Duo properly.
Failure to do so may cause discrepancies between the designed and actual engraving sizes — resulting in engraved patterns appearing larger or smaller than intended.

2. Camera Calibration

Open LightBurn and select "Calibrate Camera Lens" in laser tools. 

Selecting "USB Camera" and "Standard Lens" in the interface, click "Next".

Place the calibration card in the camera view as shown, turn off "Honeycomb check enable", clik "Capture" button, and when "Next" lights up, proceed to the next step. Repeat the same operation multiple times.

Note: A 90-degree rotation of the image is normal and does not affect camera calibration. Position the calibration card according to the diagram; the orientation of the device does not matter.

Until the interface as shown and click "Align Camera", and the lens calibration is completed. 

3. Camera alignment

At the end of section 2, click "Align Camera" ,select "USB Camera", and click "Next".

In addition, you can also enter through "Calibrate Camera Alignment" in lasertools.

Place the wooden board, adjust the focus, set the engraving parameters, click "Frame" to confirm the engraving range is within the wooden board, and then click Engraving, and click "Next" after engraving.

Note: When carving thick materials like wood, refocusing is required.

Click the "Capture Image" button to capture. When the image is clear in the camera view, click "Next". If it is not clear, recapture it or return to the previous step and engraving it again. 

Pan and zoom to find the four corner marks, and double-click in the center of each one as precisely as you can. It is important that you mark the corners in their numbered order(1, 2, 3, 4).

When you have marked all four corners, click "Next" to continue.

This LONGER manual explains how to perform 3D wood relief carving with a 20W 450 nm blue diode laser on Nano Duo using LaserBurn software. It covers essential safety protocols, material preparation, correct focus, power, speed, and line intervals to achieve precise engraving. With guidance on setup, positioning, real-time preview, and post-processing, users can create professional-quality wood relief carvings while minimizing burn risks.

The Longer Nano and Nano Pro offer precision engraving via Galvo technology, but due to manual calibration, users may find the laser misaligned with the machine’s metal base. This guide walks you through creating a custom object positioning grid using plywood and LightBurn to ensure perfect alignment with the laser head. The engraved grid provides a consistent reference point for placing materials like business cards, improving accuracy, repeatability, and reducing material waste. Just be sure not to move the plywood after engraving, as it serves as the fixed alignment guide.

The red dot focusing module on the Longer Nano Duo helps users quickly align the laser’s focal point for precise engraving. If the red dots become misaligned due to movement or impact, it’s essential to recalibrate the system. This guide covers how to find the correct focal distance (220.5mm), activate the red dot in both the device screen and LaserBurn software, and manually align the dual red lasers using simple tools. Proper adjustment ensures high engraving precision and reduces errors caused by focus issues.