This report details the status and technical issues associated with LightBurn 1.6.03, a patch release issued on June 25, 2024, to address specific bugs and stability concerns from previous 1.6.x versions. 1. Release Overview
LightBurn 1.6.03 was primarily a maintenance patch. It focused on resolving confusion caused by a bug fix in version 1.6.01 and addressing a specific issue involving SHX fonts. It remains a standard update for users running the 1.6 feature set, which introduced vendor bundles and improved draggable control handles. 2. Documented Technical Issues
Despite being a stability patch, several users have reported issues across different operating systems:
System Stability (macOS): Users on macOS Sonoma (14.5) have reported frequent crashes shortly after launching the program or while interacting with the top toolbar.
Settings Migration: Some users found that updating to 1.6.03 did not automatically carry over prior calibration and device settings, requiring a manual reload of the preferences file. UI & Tool Glitches:
The "Delete Duplicates" tool was reported to occasionally fail if objects were not properly ungrouped or if transparency settings in traces were inconsistent.
Grid visibility and layer list display errors have been noted, often requiring a software reset to fix.
Installation Alarms: Some users encountered security "spam alarms" during the update process on Windows, preventing the software from loading initially. 3. Support & Maintenance Procedures
If you are developing a support report or troubleshooting this version, the following steps are recommended by LightBurn Software: LightBurn 1.6.03 Patch Release
LightBurn 1.6.03 is a legacy version of the laser engraving software. It is primarily recommended for macOS users running versions older than 10.13 (High Sierra) , as it is one of the final releases to support macOS 10.11 and 10.12 LightBurn Documentation Key Compatibility Details macOS Support
: Specifically maintained for older Mac systems (10.11+) that cannot run more recent iterations like LightBurn 1.7. Operating Limits
: Users with newer operating systems (macOS 11+ or Windows 10+) are generally encouraged to use the latest stable release (e.g., 1.7.xx) for better feature support and security. GitHub Pages documentation Features and Usage
LightBurn 1.6.03 includes core functionality found in the 1.6 series, such as: LightBurn 1.6.03
LightBurn 1.6.03 is a maintenance release primarily aimed at providing continued support for older operating systems and addressing bugs. It serves as a "legacy" anchor point for users on specific hardware or software configurations. Legacy System Support
The most significant "deep" feature of version 1.6.03 is its extended compatibility for older Apple hardware.
macOS Support: It is the recommended version for macOS users running versions older than 10.13.
OS Compatibility: This version supports macOS 10.11 or newer, allowing users with older MacBooks or iMacs to continue using modern laser software features. Deep Engraving & 3D Modes
While version-specific to 1.6.03, LightBurn includes advanced features that allow for literal "deep" engraving:
3D Sliced Image Mode: This mode allows for intricate, layered engravings using depth maps (or height maps). It interprets grayscale pixel brightness to determine how deep the laser should fire at any given point.
Pulse Width Modulation (PWM): Supports PWM mode for finer control over the laser's power delivery, which is essential for consistent depth in materials like wood or brass.
Deep Engraving Settings: High-energy, slow-speed combinations (e.g., speed of 700mm/min at 50% power) are used in this version to achieve deep physical cuts or engravings in metals and thick wood. Core Functionality for Laser Workflows LightBurnDocs.pdf - LightBurn Documentation
LightBurn version 1.6.03 is a critical patch release issued on June 25, 2024, designed to stabilize features introduced in the 1.6 series while addressing a high-impact bug concerning layer defaults. Key Updates in Version 1.6.03
This version serves primarily as a stability fix following the "rollback" of earlier 1.6 iterations.
Layer Settings Correction: The most significant change addresses a bug in version 1.6.01 where the "Load default layer settings on new or restart" option did not revert settings correctly. In 1.6.03, this feature is automatically disabled by default for users upgrading from 1.6.00 or earlier to prevent unexpected behavior.
Legacy Support: It is the recommended version for macOS users running older operating systems (v10.11 or newer). This report details the status and technical issues
SHX Font Fix: Includes a minor bug fix specifically for SHX font rendering and handling.
Bundle Management: Inherits the major 1.6 feature for User and Vendor Bundles, allowing you to export or import all devices, libraries, and settings in a single operation. New Core Features (Carried from 1.6.00)
While 1.6.03 is a patch, it provides full access to the broader 1.6 toolset:
Draggable Control Handles: You can now toggle draggable handles for corner radii and polygon sides by holding Ctrl/Cmd, preventing accidental edits.
Advanced Grid Array: Added a "Shift by Half" toggle for easier staggered grid creation and a "Randomize orientation" flag.
Enhanced GCode Support: Includes workspace rotation (portrait to landscape) and support for negative workspace coordinates.
Material Test Improvements: New "Output" switches for Text and Border options provide more control during material calibration. Common Issues & Troubleshooting
Users on forums like the LightBurn Software Forum have reported specific post-update hurdles:
Missing Workspace/Grid: Some users found their workspace invisible or the grid gone after updating. This is often solved by selecting the device at the bottom of the Laser Tab or using the Zoom to Page tool.
Lost Settings: If camera calibrations or move positions are missing, users recommend manually re-importing preferences via File > Preferences > Import Preferences.
Stability on macOS: Rare reports of crashing on macOS Sonoma (v14.5) have been noted; the official support team typically recommends submitting a debug log if this occurs. Future Development: Version 2.0
LightBurn has indicated that 1.6.03 is one of the final refinements of the current framework. The upcoming LightBurn 2.0 will transition to Qt6, a modern development framework intended to support more complex features and better performance across platforms. LightBurn 1.6.03 Patch Release Where to find a good guide for that
Official sources (best for accuracy):
LightBurn 1.6 tutorial and filter by upload date (Jan–May 2023).Community guides:
LIGHTBURN 1.6.03 – QUICK SETTINGSDiode (5W/10W):
- Engrave wood: 2000 mm/s, 70% power, 0.1mm line interval
- Cut 3mm ply: 200 mm/s, 100% power, 2 passes
CO₂ (40W):
- Engrave: 300 mm/s, 25% power
- Cut 3mm acrylic: 12 mm/s, 60% power
Fiber (20W):
- Mark metal: 1000 mm/s, 70% power, 50 kHz frequency
Rotary diameter: Circumference / Pi (3.14159)
Image dither (photo): Jarvis or Atkinson, 0.08mm line interval
LightBurn 1.6.03 is stable and feature-rich. For the latest patch updates, always check the official release notes. If you encounter unexpected behavior, try Reset Config: Help → Reset Configuration (back up first).
A: Re-select your controller type in Edit → Device Settings. Sometimes the update resets the connection protocol.
Each layer = specific laser setting.
New in 1.6.03: Per-layer “Dithering mode” (Floyd-Steinberg, Jarvis, Stucki, Atkinson) – visible when layer type = “Image”.