Introduction

Before using the visual functions of the RAY5 series, a visual alignment (visual calibration) procedure must be completed. This process ensures accurate positioning and engraving precision by properly aligning the machine’s camera system with the working area.

During calibration, you will engrave four marker patterns (①②③④) onto the target material, capture an image using the built-in camera, and mark the center of each target point in the correct sequence within the software. Accurate completion of each step is essential to avoid positioning errors and ensure stable visual engraving performance.

Before starting, please ensure that no other programs are accessing the RAY5 camera.

1. Precautions Before Operation

Please read carefully before beginning:

• Place the engraving paper within the engraving work area. A scale value of 95 is recommended.
• Ensure no other cameras are connected, and the machine’s camera is not being used by another program.
• During visual calibration, do not move the machine or the engraving paper. Complete all steps in one continuous process.
• Each marker pattern supports single calibration only. For recalibration, engrave a new marker pattern.
• Reset the machine before starting visual calibration to prevent collisions during engraving.
• Ensure the camera lens is perpendicular to the engraving surface (use a spirit level to confirm).
• Adjust the camera to a working distance of 550 mm from the engraving surface so the entire machine is within the field of view.
• The engraving surface must be parallel and level to avoid calibration errors.
• Place the support bracket in the center of the machine’s front beam.

2. Engraving the Marking Pattern

You will use the laser to engrave the target pattern onto the material and mark the center of each target.

Step 1: Enter Visual Correction Page

After connecting the RAY5, click on the camera icon that appears in the menu bar to enter the visual correction function page.

Before accessing the visual correction features page, please zoom out and move the canvas to the side so that the entire canvas is visible when the visual features page opens.

Step 2: Adjust Engraving Parameters

Enter appropriate speed and power settings to achieve moderate engraving without burning through. Increase or decrease the scaling value until the canvas can accommodate the marked pattern.

Step 3: Border Preview

Click the border preview button to display the marked pattern on the canvas, ensuring it does not exceed the canvas size.

⚠️ Important:
After modifying speed, power, or scaling parameters, you must click “Border Preview” again to synchronize and update the marking pattern on the canvas.

Step 4: Begin Engraving

Begin carving. If it's not clear enough, you can adjust the settings and run it again. Once the pattern is clearly visible and easy to see, click Next.

3. Capture the Target Image

During this process, you will capture aligned images. You may need to wait a few seconds on this screen for the camera to successfully capture the images.

When the machine's camera is detected, click the capture button. You should see the camera view displayed in the lower left of the window, with all four target points visible, and the captured image on the right, as shown below. Click Next when all four target points are clearly visible in the captured image.

4. Marking the Target Points

In this step, you need to mark each target by double-clicking the center of each target in sequence.
Move the image by holding down the spacebar and using the mouse, and zoom in or out using the scroll wheel to ensure accurate clicking on the center position. A red marker will appear each time you double-click. If you mark incorrectly, click "Undo Mark" to remove it and try again. The double-clicking sequence must follow the order (1, 2, 3, 4) shown on the marking pattern. Once all four target points are marked, click "Complete" to finish the entire process.

✅ Calibration Complete

After completing all steps, the RAY5 visual correction system will be properly aligned and ready for accurate visual engraving.

If your Nano Duo screen is stuck on the LONGER logo during startup, the issue is usually related to corrupted or incomplete firmware. Fortunately, the problem can typically be resolved by reflashing the firmware using the official recovery method.

This guide explains the complete process step by step in a beginner-friendly format while preserving the original flashing procedure and settings exactly as required.

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Table of Contents

1. What This Guide Covers
2. Quick Answer
3. Why This Process Matters
4. Before You Start
   • Requirements
   • Precautions
5. Step-by-Step Tutorial
6. Common Problems and Solutions
7. Tips for Better Results
8. Frequently Asked Questions
9. Final Thoughts

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What This Guide Covers

This tutorial explains how to recover a Nano Duo machine when the display freezes on the LONGER startup logo.

You will learn:

• How to prepare the firmware flashing tool
• Which firmware file to use
• How to configure the correct flashing parameters
• How to erase and reflash the firmware safely
• What to do if the process does not complete successfully

The instructions below preserve the original operation sequence and parameter values exactly.

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Quick Answer

If the Nano Duo screen stays stuck on the LONGER logo during startup, reflash the firmware using flash_download_tool_3.9.5.exe, select ESP32-S3, load firmware_grbl.bin, set the firmware address to 0x0, choose the correct COM port, set BAUD: 912600, then click ERASE followed by START. After the process displays FINISH, restart the machine.

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Why This Process Matters

Firmware controls the startup and operation of the Nano Duo. If the firmware becomes damaged, incomplete, or corrupted, the machine may fail to boot normally and remain frozen on the LONGER logo screen.

Reflashing the firmware restores the machine’s core system files and allows the Nano Duo to start correctly again. Following the official flashing sequence carefully helps avoid additional startup issues or failed firmware recovery attempts.

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Before You Start

Requirements

Before beginning, prepare the following items:

• Nano Duo machine
• Windows computer
• USB cable compatible with the machine
• flash_download_tool_3.9.5.exe
• firmware_grbl.bin firmware file

Follow official machine specifications or instructions if additional drivers or accessories are required.

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Precautions

Before performing firmware recovery, keep these important safety notes in mind:

• Do not disconnect the USB cable during flashing.
• Do not power off the machine while firmware is being written.
• Make sure the correct COM port is selected.
• Double-check all parameters before clicking START.
• Close unnecessary software to reduce communication interruptions.
• Use a stable power source during the process.

Incorrect flashing parameters or interrupting the process may prevent the machine from booting properly.

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Step-by-Step Tutorial

Step 1: Prepare Tools

Action

Use the flash_download_tool_3.9.5.exe tool.

Expected Result

The firmware flashing tool is available and ready to launch on your computer.

Important Notes

Ensure the tool is fully downloaded before opening it. Running incomplete or corrupted files may cause flashing errors.

Step 2: Preparing Firmware

Action

Prepare the firmware file:

firmware_grbl.bin

Expected Result

The firmware file is ready to be selected inside the flashing tool.

Important Notes

Do not rename the firmware file. Keep it in an easy-to-find folder on your computer.

Step 3: Open the Flash Tool

Action

Open the flash_download_tool_3.9.5.exe tool, select ESP32-S3, and click OK.

Expected Result

The tool enters the main flashing interface homepage.

Important Notes

Selecting the correct chip type is critical. Ensure ESP32-S3 is selected exactly as specified.

 

Step 4: Configure Firmware and Flash the Machine

Action

After entering the homepage:

1. Click the three dots in the middle.
2. Find the prepared firmware and open it.
3. Change the firmware to: 0x0
4. Select the COM port corresponding to the machine's port number.
5. Select BAUD: 912600
6. Click ERASE and wait for the status to complete.
7. Click START and wait for the status to display FINISH.
8. Power off and restart the machine.

Expected Result

The firmware flashing completes successfully, and the machine restarts normally instead of remaining stuck on the LONGER logo.

Important Notes

• Wait patiently during both the ERASE and START processes.
• Do not disconnect cables or close the software during flashing.
• The process may take several minutes depending on the computer and connection stability.
• If the status does not display FINISH, repeat the procedure carefully.

Conclusion

That’s the complete procedure for resolving the issue where the Nano Duo screen is stuck displaying the LONGER logo. The success of this process mainly depends on accurate parameter configuration and following the flashing steps in the correct order. As long as each setting is verified carefully and the sequence is strictly followed, the firmware recovery can be completed smoothly and safely.

Engraving defects such as misalignment, distorted lines, and incomplete circles are common issues encountered during laser engraving. These problems are typically related to mechanical instability or improper motion control settings. This article outlines the root causes and provides practical solutions to restore engraving accuracy on Longer laser engravers.

1. Common Issues

Users may observe the following symptoms during operation:

• Engraved patterns appear offset or shifted
• Straight lines become wavy or uneven
• Circular shapes are not fully closed
• Repeated designs show inconsistent positioning

These issues indicate that the motion system is not operating with the required precision.

2. Mechanical Adjustment

2.1 Eccentric Nut Calibration

The eccentric nuts control the pressure between the rollers and the guide rails. Improper adjustment can lead to instability or excessive resistance.

If the nuts are too loose, the laser module may wobble during movement, causing misalignment. If they are too tight, movement becomes restricted and may introduce vibration.

Adjust the eccentric nuts so that the rollers maintain firm contact with the rails while still allowing smooth and consistent movement.

2.2 Timing Belt Tension

Timing belts play a critical role in motion accuracy. Insufficient tension can result in positioning errors and deformation of engraved shapes.

Check both X-axis and Y-axis belts and ensure they are properly tensioned. The belts should feel firm when pressed lightly, without noticeable slack. Avoid overtightening, as this may increase wear on motors and bearings.

2.3 Timing Pulley Alignment

Misaligned pulleys can cause the timing belt to rub against the pulley edges, leading to friction, noise, and unstable motion.

Ensure that the timing belts run parallel to the motion axis. Adjust the pulley position if necessary to eliminate lateral friction and ensure smooth transmission.

2.4 Fastener Inspection

Loose mechanical components are a major source of engraving inaccuracies.

Inspect and tighten all relevant screws and connections, including:

• X-axis timing pulley set screws
• Y-axis motor couplings
• Pulley mounting screws

All components should be securely fixed to prevent any movement during operation.

3. Software Optimization

Mechanical adjustments should be complemented by proper software configuration.

3.1 Overcut Setting in LightBurn

Incomplete circles or open paths are often caused by insufficient overlap between the start and end points of a path.

In LightBurn, the Overcut parameter can be used to extend the cutting path slightly beyond the endpoint.

Set the Overcut value to 0.3 mm in the Advanced settings. This ensures that closed shapes such as circles are fully completed without visible gaps.

4. Additional Recommendations

Regular maintenance is essential to maintain engraving accuracy over time.

• Keep guide rails clean and free of dust or debris
• Periodically check belt tension and component tightness
• Use appropriate speed and power settings for detailed work
• Perform routine calibration to ensure consistent performance

5. Conclusion

Engraving misalignment, warped lines, and incomplete circles are typically caused by mechanical looseness, improper belt tension, pulley misalignment, or incorrect software settings. By systematically inspecting and adjusting both hardware and software parameters, users can effectively eliminate these issues and achieve precise, high-quality engraving results with Longer laser engravers.

Experiencing a black or white screen on your touchscreen panel can be frustrating, but the good news is that most issues can be diagnosed—and often resolved—through a structured step-by-step approach.
This guide walks you through three stages of troubleshooting, from simple checks to deeper hardware diagnostics.

Stage 1: Quick and Basic Checks

1. Verify Power Supply

• Check the power adapter: Ensure the adapter’s indicator light is green.

• Confirm power switches: Make sure both the main power switch and the emergency stop switch are turned ON.

• Observe LEDs: Look at the controller box or mainboard to check if any status or power LEDs are illuminated.

  • If the adapter is green but the machine shows no lights at all, the problem may be in the controller box.

2. Perform a Full Restart

Completely shut down the machine, unplug the power cable, wait 1–2 minutes, then reconnect and restart.
This helps resolve temporary system freezes or UI boot issues.

3. Check Screen Brightness (for dark screens with backlight on)

Some touchscreens have independent brightness controls.
If the screen looks “black” but still emits backlight, try adjusting the brightness through the touchscreen’s internal settings.

4. Consider Auto Sleep Mode

Many touchscreens include auto-sleep/auto-dimming features.
If the screen is blank after idle time but the machine still works, tap the screen or restart to wake it.

5. Listen for Startup Sounds

Check whether the mainboard or controller emits any boot-up beeps or activity noises.

• If yes → The system may be functioning, but the screen or its connection may be faulty.

• If silent, the issue may lie in the mainboard or power distribution.

Stage 2: Internal Cable and Hardware Checks

⚠ Important: Before starting this stage, ensure the machine is fully powered off and the power cable is unplugged. Safety first!

1. Inspect the Touchscreen Cable

Most laser engravers use a ribbon cable or FPC cable.

Steps:

• Open the controller box or the touchscreen housing to locate the cable connecting the touchscreen to the mainboard.

• Reconnect both ends:

  • Gently disconnect the cable from both the screen and the mainboard.

  • Inspect for bent pins or loose connectors.

  • Clean the gold contacts with a rubber eraser or dry cloth.

  • Reinsert firmly and lock the latch.

2. Check for Cable Damage

Look for:

• Creases

• Crushed sections

• Burn marks

• Broken copper traces

Any visible damage means the cable should be replaced.

3. Test Using the Replacement Method (Most Effective)

• Option A: Swap in a known working touchscreen
  If the replacement works, then the original touchscreen is faulty.

• Option B: Connect the problematic touchscreen to a known working machine
  If the issue persists, the touchscreen is confirmed defective.

Stage 3: Identify Core Component Failures

If none of the previous steps resolve the issue, the problem is likely within the core modules.

1. Touchscreen Hardware Failure

A very common cause.

Symptoms:

• Screen permanently black or white

• No boot logo or flickering

• No response despite cable replacement

Causes may include aging, vibration, unstable voltage, or manufacturing defects.

Diagnosis:

• Confirmed via replacement test in Stage 2.

2. Mainboard/Control Board Failure

The display output circuit on the mainboard may be damaged.

How to judge:

• If the machine can still move axes, the laser fires, and the LEDs respond normally:
  → The mainboard is likely fine; the issue is with the touchscreen or cable.

• If the entire machine is unresponsive, with no lights or movement:
  → The mainboard or power distribution system may be faulty.

Final Notes

By following this structured approach—from basic checks to full hardware verification—you can quickly narrow down the root cause of touchscreen display issues. If you identify a defective screen, cable, or mainboard, contact customer support with your findings for a faster resolution.

During the use of the Ray5 series laser engraver, users may encounter software-related issues such as system bugs, unstable operation, or feature limitations. These issues can affect engraving performance and overall user experience.

To address these concerns and continuously improve device performance, the Ray5 firmware is regularly updated. Each new firmware version includes bug fixes, stability improvements, and additional features designed to enhance the functionality of the machine.

Cause and Solution

The issues experienced by users are often caused by outdated firmware that may contain unresolved bugs or lack compatibility with certain system optimizations. Updating the firmware ensures that the device operates with the latest improvements provided by the manufacturer.

The firmware of Ray5 is continuously updated to fix bugs and introduce new features. Firmware upgrade procedures may vary depending on the operating system and device configuration. Therefore, it is important to follow the correct upgrade method provided in the official firmware package.

To perform the upgrade, download the Ray5 firmware package from the LONGER official website. Inside the package, detailed instructions are provided to guide the entire process.

Install the MKSLaserTool-setup V1.1.2.exe file, then open the MKS ESP32 Download Tool. Select the correct communication port and choose the appropriate .bin firmware file. Click Start to begin the flashing process. Once the process is complete, the system will display a message indicating that the firmware has been successfully flashed.

After completing the firmware update, copy the dic-cfg.txt file from the configuration folder to the root directory of the SD card. Insert the SD card into the main control board of the engraver, then restart the machine. The system will automatically detect and update the configuration file.

Result

After successfully upgrading the firmware and updating the configuration file, the Ray5 engraver will operate with improved stability and optimized performance. The previously existing bug will no longer occur, and users can benefit from enhanced functionality and a smoother engraving experience.

Regular firmware updates are recommended to ensure that the device remains up to date with the latest improvements and continues to perform at its best.

Conclusion

Firmware plays a critical role in the performance and reliability of the Ray5 series laser engraver. Outdated firmware can lead to operational issues, while upgrading to the latest version resolves known bugs and enhances system capabilities.

By following the official upgrade procedure, users can ensure that their device remains stable, efficient, and fully optimized. It is recommended to periodically check for firmware updates and apply them as needed to maintain optimal performance.

Proper laser focus is one of the most important parts of achieving clean, sharp, and accurate engraving results with the LONGER Ray5 Mini. If the laser is not focused correctly, engravings may appear blurry, weak, uneven, or lack detail.

This guide explains exactly how to focus the Ray5 Mini using the official procedure, along with beginner tips, safety precautions, troubleshooting advice, and common questions.

Table of Contents

• What This Guide Covers
• Quick Answer: How to Focus the Ray5 Mini
• Why This Process Matters
• Before You Start
• Requirements
• Precautions
• Step-by-Step Tutorial
• Common Problems and Solutions
• Tips for Better Results
• Frequently Asked Questions
• Final Thoughts

What This Guide Covers

This tutorial explains:

• How to focus the Ray5 Mini laser engraver
• How to use the 2 mm focus block
• How to adjust the laser module correctly
• What proper focus should look like
• Common focusing mistakes beginners make
• Troubleshooting blurry or weak engraving results

Quick Answer: How to Focus the Ray5 Mini

To focus the Ray5 Mini:

1. Place the 2 mm focus block on the engraving surface.
2. Loosen the M3*14 handle screw.
3. Move the laser module downward until the bottom of the light shield touches the surface of the focus block.
4. Tighten the M3*14 handle screw.

This sets the correct focal distance for engraving.

Why This Process Matters

Correct laser focus directly affects engraving quality.

When the laser is focused properly:

• Engraving lines become sharper
• Details appear cleaner
• Cutting performance improves
• Burn marks are reduced
• Energy is concentrated more efficiently

If the laser is out of focus, you may experience:

• Blurry engraving
• Uneven burn depth
• Weak cutting performance
• Excessive charring
• Inconsistent results

For beginners, improper focus is one of the most common reasons engraving projects fail.

The Ray5 Mini uses a fixed focal distance system with a 2 mm focus block to make setup easier and more repeatable.

Before You Start

Before focusing your laser engraver, make sure the machine is positioned on a stable and level surface.

Remove unnecessary objects from the work area and ensure the engraving material is flat. Uneven materials can affect focus accuracy.

It is also recommended to clean the laser module area before starting.

Requirements

Prepare the following items before beginning:

• LONGER Ray5 Mini
• 2 mm focus block
• Engraving material
• Proper safety glasses
• Stable work surface

Follow official machine specifications or instructions.

Precautions

Laser engravers can be hazardous if used improperly. Always follow basic laser safety procedures.

Important Safety Notes

• Never look directly into the laser beam
• Wear proper laser safety eyewear
• Keep flammable materials away from the machine
• Operate the engraver in a ventilated area
• Ensure the machine is powered correctly
• Keep hands away from moving parts during operation

Before Adjusting the Laser Module

• Make sure the machine is not actively engraving
• Adjust the module gently
• Do not force the laser assembly downward
• Avoid overtightening the handle screw

Improper handling may affect engraving precision or damage components.

Step-by-Step Tutorial

Step 1: Place the 2 mm Focus Block on the Engraving Surface

Action

Place the 2 mm focus block directly on the engraving surface.

Expected Result

The focus block should sit flat on top of the material or working surface where engraving will occur.

Important Notes

The focus block establishes the correct focal distance between the laser module and the material surface.

Make sure:

• The material is flat
• The focus block is stable
• Nothing is underneath the block
• The work surface is level

If the material shifts during setup, the focus distance may become inaccurate.

Step 2: Loosen the M3*14 Handle Screw

Action

Loosen the M3*14 handle screw on the laser module.

Expected Result

The laser module should move freely up and down after loosening the screw.

Important Notes

Only loosen the screw enough to allow movement.

Do not completely remove the screw.

Avoid applying excessive force, as this may affect alignment or damage the mounting mechanism.

Step 3: Move the Laser Module Downward

Action

Move the laser module downward until the bottom of the light shield touches the surface of the focus block.

Expected Result

The bottom of the light shield should lightly contact the focus block surface.

Important Notes

This is the critical focusing step.

The laser module should:

• Rest gently against the focus block
• Not press heavily onto the block
• Remain straight and aligned

If the module is tilted or uneven, engraving quality may decrease.

The purpose of the focus block is to create the correct focal distance automatically.

Step 4: Tighten the M3*14 Handle Screw

Action

Tighten the M3*14 handle screw after positioning the laser module.

Expected Result

The laser module should remain securely fixed in position.

Important Notes

Make sure the module does not move while tightening the screw.

Do not overtighten the screw.

Once tightened, carefully remove the focus block before starting engraving.

Common Problems and Solutions

Tips for Better Results

Focus Before Every Important Project

Even small height differences can affect engraving quality.

Refocusing before each project helps maintain consistent results.

Use Flat Materials

Warped wood, bent acrylic, or uneven surfaces can cause parts of the engraving to go out of focus.

Keep the Laser Lens Clean

Dust and smoke residue can reduce laser performance.

Clean the laser window carefully using appropriate lens-cleaning materials.

Test on Scrap Material First

Before engraving final projects:

• Test power settings
• Check focus quality
• Verify engraving depth

This helps prevent wasted materials.

Secure the Material

Movement during engraving may affect focus consistency and engraving precision.

Monitor Engraving Results

Signs of proper focus include:

• Thin engraving lines
• Sharp edges
• Consistent depth
• Cleaner details

Frequently Asked Questions

Does the Ray5 Mini use a fixed focus system?

The Ray5 Mini uses a focus block method to achieve the correct focal distance quickly and consistently.

What size focus block does the Ray5 Mini use?

The official procedure uses a 2 mm focus block.

Why does my engraving still look blurry after focusing?

Possible causes include:

• Dirty laser lens
• Incorrect material settings
• Uneven material surface
• Improper focus positioning

Recheck the focusing procedure carefully.

Should the light shield press firmly on the focus block?

No. The bottom of the light shield should gently touch the surface of the focus block.

Avoid pressing down forcefully.

Do I need to refocus for different materials?

Yes. Materials with different thicknesses may require refocusing to maintain the correct laser distance.

Can incorrect focus damage the machine?

Improper focus usually affects engraving quality rather than damaging the machine directly. However, incorrect adjustments or excessive force may affect mechanical components.

Why is laser focus important for engraving quality?

Correct focus concentrates laser energy into the smallest possible spot size, improving engraving precision and cutting efficiency.

Can beginners focus the Ray5 Mini easily?

Yes. The 2 mm focus block system is designed to simplify laser focusing for beginners and experienced users alike.

Final Thoughts

Learning how to focus the LONGER Ray5 Mini correctly is essential for achieving high-quality engraving results.

The official focusing process is simple:

1. Place the 2 mm focus block on the engraving surface
2. Loosen the M3*14 handle screw
3. Lower the laser module until the light shield touches the focus block
4. Tighten the M3*14 handle screw

Taking a few extra seconds to focus the laser properly can dramatically improve engraving sharpness, detail, and consistency.

For the best results, always maintain a clean machine, use flat materials, and verify focus before engraving important projects.

Summary:
Firmware plays a crucial role when the laser engraving machine performs engraving tasks. As the device continues to be updated, the firmware is also continuously optimized and upgraded. The latest firmware version can help you complete engraving projects more efficiently. This article will guide you on how to upgrade the firmware for the Nano Duo laser engraving machine.

Step-by-Step Instructions:

1. Download the new firmware version from the official website and save it to the SD card.

2. Power on the machine and insert the SD card into the slot on the side of the machine. When an upward arrow and the “SD” icon appear on the main interface, it indicates that the reading is complete.

3. On the main interface, click the “Settings” option to enter the settings menu, which includes some basic settings such as network and language.

4. Click the “Firmware update” option to enter the upgrade interface, then click the upward arrow button to upgrade the components.

Here, "Screen" represents the screen component upgrade, "Galvo" represents the galvanometer component upgrade, and "Main Control" represents the main control component upgrade. Select the component you want to upgrade to perform the upgrade.

Note: If there is no new version of the component on the SD card, the interface will display “Retrieval failed.”

Summary:
The new firmware can provide you with many conveniences. It not only improves the device’s performance but also enhances engraving precision and efficiency. By updating the firmware, your laser engraving machine will better respond to user commands and achieve a smoother operation experience. Additionally, it may bring new features and improvements, such as smarter fault diagnosis and repair prompts, ensuring that your workflow is more seamless and unobstructed.

Proper maintenance of the laser window lens and galvo mirror is essential for maintaining engraving quality and ensuring stable laser performance. Over time, dust, smoke residue, and debris generated during engraving can accumulate on these optical components, leading to reduced laser efficiency, lower engraving precision, and potential distortion.

Regular cleaning helps maintain optimal laser transmission and ensures consistent engraving results.

Cleaning Procedure

1. Preparation

Prepare the necessary cleaning materials before starting:

• Alcohol
• Lint-free cloth

Ensure that the working environment is clean and free from excessive dust to avoid contaminating the optical components during the cleaning process.

2. Remove the Laser Window Lens

Rotate counterclockwise to remove the laser window lens.

Once removed, you will be able to access both the laser window lens and the galvo mirror. These components are critical parts of the optical system and should be handled with care to avoid scratches or damage.

3. Clean the Optical Surfaces

Moisten the lint-free cloth with alcohol. Gently wipe the front and back surfaces of both the galvo mirror and the laser window lens.

During cleaning:

• Apply light pressure only
• Avoid repeated or aggressive wiping
• Ensure all visible dust and residue are removed

After cleaning, make sure that any remaining alcohol is completely dried to prevent watermarks or streaks on the optical surfaces.

4. Reinstall the Laser Window Lens

After cleaning is complete, reinstall the laser window lens by rotating it clockwise back into place.

Ensure that the lens is securely fitted and properly aligned before operating the machine.

Conclusion

Cleaning the laser window lens and galvo mirror is a critical maintenance task for the Nano system. Contaminated optical components can significantly affect laser performance and engraving quality.

By following proper cleaning procedures and using appropriate materials, users can maintain clear optical paths, improve engraving precision, and extend the lifespan of the machine. Regular inspection and maintenance are recommended to ensure consistent and reliable performance.

Transferring images to the LaserBurn App is one of the most important steps when using the Longer Nano laser engraver. Whether you want to engrave photos, logos, artwork, or custom graphics, understanding the correct image transfer process helps ensure smooth operation and accurate engraving results.

This beginner-friendly guide explains how to transfer images to the LaserBurn App on the Longer Nano step by step, including preparation tips, troubleshooting advice, and best practices for successful laser engraving projects.

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Table of Contents

• Quick Answer
• What This Guide Covers
• Why Transferring Images to LaserBurn App Matters
• Before You Start
  • Requirements
  • Precautions
• Step-by-Step Tutorial
  • Step 1: Prepare the Image File
  • Step 2: Open the LaserBurn App
  • Step 3: Connect the Longer Nano
  • Step 4: Import the Image
  • Step 5: Adjust the Image Settings
  • Step 6: Transfer the Image to the Machine
• Common Problems and Solutions
• Tips for Better Results
• Frequently Asked Questions
• Final Thoughts

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Quick Answer

To transfer images to the LaserBurn App on the Longer Nano, open the app, connect the machine, import your image file, adjust the engraving settings, and send the image to the engraver. Proper file preparation and stable device connection help ensure smooth image transfer and accurate engraving performance.

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What This Guide Covers

This tutorial explains:

• How to prepare image files for engraving
• How to connect the Longer Nano to the LaserBurn App
• How to import and transfer images correctly
• Common transfer issues and solutions
• Tips for improving engraving quality

By the end of this guide, beginners should understand the complete workflow for sending images to the Longer Nano laser engraver.

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Why Transferring Images to LaserBurn App Matters

Image transfer is the foundation of every engraving project. If the image is not transferred correctly, engraving quality can suffer due to incorrect scaling, incomplete data, or failed communication between the app and the machine.

A proper transfer process helps users:

• Prevent failed engraving jobs
• Improve engraving accuracy
• Maintain image quality
• Reduce setup mistakes
• Save material and production time

For beginners using portable laser engravers, learning the correct workflow also makes the engraving experience much smoother.

If you are new to portable laser engraving systems, you may also benefit from learning about the https://www.longer3d.com/blogs/laser-engraver-academy-1/longer-nano-the-ultimate-portable-laser-engraver-a and its wireless operation features.

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Before You Start

Requirements

Before transferring images to the LaserBurn App, prepare the following:

• Longer Nano laser engraver
• Mobile device with the LaserBurn App installed
• Supported image file
• Stable wireless connection
• Fully powered machine
• Compatible engraving material

Follow official machine specifications or instructions.

You may also want to review the official https://www.longer3d.com/blogs/laser-engraver-academy-1/how-to-enable-framing-mode-on-lightburn-for-longer-laser-engravers if you plan to preview engraving positions before starting.

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Precautions

Before starting the image transfer process, keep these safety and preparation tips in mind:

• Always place the machine on a stable surface
• Ensure proper ventilation during engraving
• Never look directly at the laser beam
• Keep flammable materials away from the machine
• Use correctly formatted image files
• Avoid interrupting the transfer process

A weak wireless connection may cause incomplete file transfers or communication interruptions.

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Step-by-Step Tutorial

Step 1: Prepare the Image File

Action

Select the image you want to engrave and save it on your mobile device or supported storage location.

Ensure the image is clear and properly cropped before importing it into the LaserBurn App.

Expected Result

The image file is ready for importing into the application.

Important Notes

• High-contrast images usually engrave better
• Blurry or low-resolution images may produce poor engraving quality
• Avoid overly complex graphics for beginner projects
• Follow official machine specifications or instructions for supported formats

If you frequently engrave photos, learning proper image optimization techniques can significantly improve results.

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Step 2: Open the LaserBurn App

Action

Launch the LaserBurn App on your mobile device.

Wait for the application interface to load completely before proceeding.

Expected Result

The LaserBurn App opens successfully and displays the main control interface.

Important Notes

• Make sure the app version is updated
• Close unnecessary background applications if performance is slow
• Some devices may require wireless permissions

If connection problems occur, restarting the app may help.

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Step 3: Connect the Longer Nano

Action

Power on the Longer Nano laser engraver and connect it through the LaserBurn App.

Follow the app instructions to establish communication between the mobile device and the machine.

Expected Result

The machine appears as connected inside the application.

Important Notes

• Keep the mobile device near the machine during setup
• Weak wireless signals can interrupt image transfer
• Ensure the machine is fully powered before connecting

If the machine cannot be detected, follow official machine specifications or instructions.

For additional setup guidance, review the https://www.longer3d.com/blogs/basics-functions/how-to-use-tf-card-offline-mode-for-engraving for offline engraving workflows.

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Step 4: Import the Image

Action

Use the image import function inside the LaserBurn App to select the prepared image file.

Choose the correct image from your device storage.

Expected Result

The image appears inside the workspace area of the LaserBurn App.

Important Notes

• Verify the correct image was selected
• Large image files may take longer to load
• Maintain proper image orientation before engraving

At this stage, users can typically resize or position the image inside the workspace.

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Step 5: Adjust the Image Settings

Action

Adjust the image position, size, and engraving parameters inside the LaserBurn App.

Follow the original tutorial settings and machine recommendations.

Expected Result

The image is correctly positioned and ready for transfer.

Important Notes

• Incorrect scaling can affect engraving accuracy
• Double-check image placement before sending the job
• Follow official machine specifications or instructions for engraving settings

Before engraving cylindrical objects, you may also find the https://www.longer3d.com/blogs/laser-engraver-academy-1/longer-how-to-adjust-the-engraving-position-when-using-a-rotary helpful.

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Step 6: Transfer the Image to the Machine

Action

Send the image file from the LaserBurn App to the Longer Nano laser engraver.

Wait for the transfer process to complete.

Expected Result

The image data transfers successfully to the machine and becomes ready for engraving.

Important Notes

• Do not close the app during transfer
• Avoid moving too far from the machine
• Transfer speed may vary depending on image size

Once the transfer finishes, verify the engraving preview before starting the laser operation.

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Common Problems and Solutions

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Tips for Better Results

Use High-Contrast Images

Black-and-white or high-contrast graphics usually produce cleaner engraving results than low-contrast images.

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Keep the Wireless Connection Stable

Stay within recommended connection range while transferring files to avoid interruptions.

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Preview Before Engraving

Always check the image position and orientation before starting the engraving process.

Framing and preview functions help reduce material waste.

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Start With Simple Designs

Beginners should start with simple logos, text, or graphics before attempting highly detailed photo engravings.

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Clean the Laser Lens Regularly

A dirty lens can reduce engraving quality. Proper maintenance improves consistency and machine performance.

You can follow the official https://www.longer3d.com/blogs/academy/lens-cleaning-for-longer-ray5-5w cleaning guide for general laser maintenance practices.

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Frequently Asked Questions

Q: How do I transfer images to LaserBurn App on Nano?

A: Open the LaserBurn App, connect the Longer Nano, import your image, adjust settings, and send the file to the machine.

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Q: What image files work best for laser engraving?

A: High-contrast and high-resolution images generally produce better engraving results.

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Q: Why does my image transfer fail?

A: Weak wireless connections, unsupported file formats, or interrupted communication may cause transfer failures.

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Q: Can beginners use the LaserBurn App easily?

A: Yes. The LaserBurn App is designed to simplify wireless laser engraving workflows for beginner users.

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Q: How long does image transfer take?

A: Transfer time depends on image size, connection stability, and device performance.

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Q: Why is my engraving position incorrect after transfer?

A: Incorrect image alignment or workspace positioning may cause placement errors.

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Q: Can I transfer photos for laser engraving?

A: Yes. However, photo engraving quality depends heavily on image resolution and contrast.

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Q: What should I do if the app freezes during transfer?

A: Restart the app, reconnect the machine, and try the transfer again.

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Final Thoughts

Learning how to transfer images to the LaserBurn App on the Longer Nano is an essential skill for successful laser engraving projects. A proper workflow helps improve engraving accuracy, reduce transfer errors, and create smoother project experiences for beginners and experienced makers alike.

By following the correct setup process, maintaining stable connections, and preparing quality image files, users can achieve more reliable engraving performance and better final results.

For additional engraving tutorials, troubleshooting guides, and setup instructions, explore the official Longer laser engraving knowledge base and related tutorials.