Laser Engraver Blogs

• 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.

Slate is a stylish and durable material ideal for personalized engraving projects. With the LONGER Nano Pro laser engraver and LightBurn software, users can easily etch detailed graphics, text, or art onto slate surfaces. This guide explores the principles behind slate laser engraving, compares direct and coated methods, and offers a step-by-step process using the Nano Pro. By properly preparing the slate and fine-tuning engraving settings, creators can achieve crisp, professional results. Whether for gifts, signage, or home décor, laser engraving slate has never been more accessible.

Line interval is a key setting in LightBurn that directly impacts engraving detail, visual quality, and processing time. This guide uses the LONGER NANO Pro to demonstrate how different line intervals—from 0.03mm for high-detail work to 0.12mm for fast, low-detail tasks—can dramatically change the outcome of your laser projects. By understanding and adjusting this parameter, users can achieve the perfect balance of precision, efficiency, and artistic style in their engravings.

This guide explores black acrylic engraving with the LONGER Nano Pro laser engraver, highlighting differences between cast and extruded sheets, and demonstrating optimal LightBurn settings (speed 10000 mm/min, power 30%) to achieve sharp image quality on cast acrylic surfaces.

Batch engraving anodized aluminum business cards has never been easier or more precise. With the LONGER Nano Series laser engraving machine, creative professionals and business owners can produce sleek, customized cards that leave a lasting impression. This guide walks through the complete process—from setup and positioning to design import and laser parameter adjustment—ensuring efficient and professional-grade results every time.