gpx ☆

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Description:
Gcode to x3g converter for 3D printers running Sailfish

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: 3d-printing gcode sailfish makerbot conversion cli

Install: brew install gpx

About:
GPX is a command-line utility that translates G-code, the standard language for 3D printer instructions, into the x3g format used by older MakerBot and Sailfish firmware printers. It acts as a critical compatibility layer, enabling modern slicers to generate toolpaths for legacy hardware. This allows users to continue using their reliable machines with contemporary software workflows.

Key Features:

Bidirectional conversion between G-code and x3g formats
Support for MakerBot Replicator 1, 2, and 2X models
Handles firmware-specific commands like acceleration and temperature control
Command-line interface suitable for automation and scripting
Configurable profile settings for different printer hardware

Use Cases:

Using modern slicers like PrusaSlicer or Cura with a MakerBot Replicator
Integrating x3g generation into automated 3D printing build pipelines
Converting existing G-code files for use on Sailfish firmware printers

Alternatives:

PrusaSlicer (built-in) – PrusaSlicer has native x3g export, but GPX offers more granular control and is essential for other slicers.
Cura (with x3g plugins) – Cura requires plugins for x3g export; GPX provides a more robust and standalone conversion process.

Version History

Detected	Version	Rev	Change	Commit
Sep 12, 2025 1:19pm		0	VERSION_BUMP	357338c4