How to Fix Engraving Stutter on Nano Pro

The LONGER Nano Pro is designed for fast and precise laser engraving. However, some users may experience engraving stuttering, pauses, or uneven movement during operation. In most cases, this happens because the computer cannot transmit engraving data quickly enough to keep up with the machine’s speed.

This guide explains how to fix Nano Pro engraving stuttering using the official settings in LightBurn and LaserBurn.

Table of Contents

• What This Guide Covers
• Quick Answer
• Why This Process Matters
• Before You Start
• Requirements
• Precautions
• Step-by-Step Tutorial
  • Fix Stuttering in LightBurn
  • Fix Stuttering in LaserBurn (PC)
• Common Problems and Solutions
• Tips for Better Results
• Frequently Asked Questions
• Final Thoughts

What This Guide Covers

This tutorial explains:

• Why engraving stutter happens on the Nano Pro
• How to enable GCode Clustering in LightBurn
• How to enable GCode Clustering in LaserBurn (PC)
• How to improve engraving stability
• When to use SD card engraving

The steps below follow the official LONGER procedure exactly.

Quick Answer

If your Nano Pro engraving pauses, stutters, or moves unevenly:

1. Enable Enable GCode Clustering in LightBurn or LaserBurn.
2. Save the settings.
3. Use SD card engraving for high-speed or complex jobs.

According to LONGER, engraving from an SD card does not cause stuttering because it avoids real-time USB data transmission limitations.

Why This Process Matters

The Nano Pro is a high-speed engraving machine. During engraving, your computer continuously sends motion data to the machine. If the transmission speed becomes slower than the engraving speed, the machine may:

• Pause briefly during movement
• Produce uneven engraving lines
• Create inconsistent engraving quality
• Appear to lag during image engraving

This issue is usually related to communication speed rather than hardware failure.

Enabling GCode Clustering helps optimize how engraving data is transmitted. This reduces communication interruptions and improves engraving smoothness.

For detailed image engraving or high-speed projects, stable data flow is especially important.

Before You Start

Before adjusting software settings, make sure:

• Your Nano Pro is properly connected
• The engraving software is functioning normally
• Your USB cable is stable and securely connected
• The machine is powered correctly
• You have administrator permission if required by your computer

If connection issues occur, follow official machine specifications or instructions.

Requirements

You will need:

• LONGER Nano Pro
• A computer
• One of the following software programs:
  • LightBurn
  • LaserBurn
• USB connection or SD card
• Engraving project file

Precautions

Before changing settings, keep these points in mind:

• Do not disconnect the USB cable during engraving.
• Avoid running unnecessary background applications.
• Save all software settings after modification.
• Use official software versions whenever possible.
• If problems continue, try SD card engraving.

The official LONGER documentation states that SD card engraving does not cause stuttering.

Step-by-Step Tutorial

Fix Stuttering in LightBurn

Step 1: Open the Relevant Setting in LightBurn

Action

Click the relevant button in the top menu bar and enable the Enable GCode Clustering option.

Expected Result

The GCode Clustering option becomes enabled.

Important Notes

• This setting helps optimize data transmission between the computer and the Nano Pro.
• It is especially useful during high-speed engraving operations.
• This procedure follows the official LONGER instructions exactly.

Step 2: Save the Setting

Action

Click OK to save.

Expected Result

The software stores the new setting and applies it to future engraving tasks.

Important Notes

• Restarting the software may help ensure the setting is fully applied.
• Test with a small engraving project before running large jobs.

Fix Stuttering in LaserBurn (PC)

Step 1: Open Machine Settings

Action

Click the relevant button in the top menu bar to open the Machine Settings interface.

Expected Result

The Machine Settings window opens successfully.

Important Notes

• Use the PC version of LaserBurn.
• Ensure the Nano Pro is connected before changing settings.

Step 2: Enable GCode Clustering

Action

Enable the Enable GCode Clustering option.

Expected Result

The option is activated for the machine profile.

Important Notes

• This improves communication efficiency during engraving.
• It can reduce pauses and uneven motion.

Step 3: Save the Settings

Action

Click Save to apply the settings.

Expected Result

The software saves and applies the configuration.

Important Notes

• Run a small engraving test after saving.
• If stuttering continues, try SD card engraving instead of USB transmission.

  

Common Problems and Solutions

Tips for Better Results

Use SD Card Engraving When Possible

According to LONGER, engraving from an SD card avoids real-time data transmission issues and will not cause stuttering.

This is especially helpful for:

• Large image engravings
• Complex vector designs
• High-speed engraving jobs
• Long-duration projects

Keep USB Connections Stable

Unstable USB communication can contribute to engraving interruptions.

Tips:

• Avoid loose cables
• Do not use damaged USB cables
• Avoid moving the machine during operation
• Connect directly to the computer when possible

Reduce Background System Load

Heavy CPU or memory usage can slow communication between the computer and the engraver.

Before engraving:

• Close unnecessary applications
• Pause large downloads
• Avoid running resource-intensive software

Test Settings Before Production Jobs

Always test on scrap material before engraving important projects.

This helps verify:

• Smooth machine motion
• Stable communication
• Correct engraving performance

Frequently Asked Questions

Why does my Nano Pro stutter during engraving?

The most common reason is that data transmission from the computer cannot keep up with the engraving speed.

What is GCode Clustering?

GCode Clustering is a software option that improves how engraving data is transmitted to the machine, helping reduce pauses and stuttering.

Does SD card engraving prevent stuttering?

Yes. LONGER states that engraving from an SD card does not cause stuttering because it avoids real-time data transmission limitations.

Should I use LightBurn or LaserBurn?

Both programs support the official GCode Clustering solution for Nano Pro engraving stuttering.

Is engraving stutter a hardware problem?

Usually no. The issue is commonly related to communication speed rather than machine hardware.

Can USB cables cause engraving interruptions?

Yes. Loose or unstable USB cables may interrupt communication and affect engraving stability.

Will restarting the software help?

In some cases, restarting the software after saving settings can help ensure the configuration is fully applied.

Can image engraving increase the chance of stuttering?

Yes. Detailed image engraving often requires more data transmission, which can increase the chance of communication delays.

Final Thoughts

Nano Pro engraving stuttering is usually caused by communication limitations during high-speed engraving rather than a machine defect. By enabling Enable GCode Clustering in LightBurn or LaserBurn, users can significantly improve data transmission efficiency and reduce engraving interruptions.

For the best stability, especially when engraving detailed images or large projects, SD card engraving is strongly recommended.

Following the official LONGER procedure exactly helps ensure smoother engraving performance, more consistent results, and a better overall engraving experience with the Nano Pro.