Galileo 2 Extruder (G2E)
Based on published sources · Not tested by us ·
Overview
Planetary-geared filament feeder for a Stealthburner toolhead, with custom gearbox parts, selectable printed housings and a detailed assembly manual. [S001] [S002] [S005]
G2E is the filament-feeding part of a printer toolhead, with a 9:1 planetary gearbox and a separate hotend downstream. This profile covers the Stealthburner version. The same repository also contains standalone extruders and Z-axis drives, which should not be combined into one build list. The root README calls G2E released while the standalone G2SA remains public beta. [S001] [S002]
3D preview
Galileo 2 Extruder assembly. G2E feeder assembly geometry; hotend and host printer are separate. Purchased parts are represented, not separately source-qualified.
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Download original STEP · File provenance and other models
Source, license and scale
Source: JaredC01 and contributors, revision 98f8a37944d7277cd37231776400553cc402219f. Original and preview: GPL-3.0. Preview conversion by Open Source Robotics; original file unchanged. STEP preview triangulated in millimetres. No physical part tested.
Confirm scale and manufacturing settings before printing.
Specifications
| Detail | Description |
|---|---|
| Type | Planetary-geared filament feeder Reported by source [S001] · Checked 2026-09-30 |
| Intended users | Builders evaluating a sourced mechanical design and its integration requirements. Editorial assessment [S001] · Checked 2026-09-30 |
| Assembly | Illustrated G2E manual covers housings, heat-set inserts, gearbox, drive gear and rear-body assembly. Reported by source [S005] · Checked 2026-09-30 |
| Calibration | Update gear ratio, rotation distance and motor current, then perform extruder calibration. Reported by source [S001] · Checked 2026-09-30 |
| Operating system | Not known |
| Computer needed | Not known |
Assembly and use
Choose housings before printing
The STL guide requires one front body: either an ECAS-coupler version or a friction-fit Bowden-tube version. It also requires one cable-chain attachment, selected for two-hole or three-hole chains. Printing every alternative would produce spare options rather than one matched assembly. The manual specifies ABS or ASA, 0.2 mm layers, four walls, five top/bottom layers and 40% infill. [S003] [S005]
Purchased gearbox parts matter as much as the printed housings. The manual identifies a custom 9-tooth NEMA 14 pancake stepper, 31-tooth MJF planet gears, a 72-tooth ring housing, aluminum carrier, 16 mm filament drive gear and bearings. Its assembly sequence locates the carrier and shim before securing the drive gear. Use the illustrated sequence to reconcile a kit's contents; a generic stepper and downloaded STLs do not establish an equivalent gearbox. [S005]
Match the host and recalibrate
The documented mechanical target is a Stealthburner MGN12 toolhead, including the listed Tap or inductive-probe carriage arrangements. That is printer-interface evidence, not cobot or delta-robot compatibility. The hotend, heater, temperature sensing and host controller must be selected separately from this feeder. No complete extrusion-system price is established. [S001] [S005]
Upstream requires changes to Klipper's gear ratio, rotation distance and motor current, followed by extruder calibration. Its example uses 9:1, rotation distance 47.088, 16 microsteps and 0.6 A for a TMC2209. Treat those as settings for the documented configuration, not universal values for substituted motors or drivers. [S001] [S005]
The repository carries GPL-3.0. No physical assembly, extrusion calibration or performance testing was performed. [S004]
Cost
No current, complete configuration-specific build cost has been established for this profile.
Source files and licenses
Mechanical design files are licensed; purchased components, source completeness and a working matched configuration remain separate checks.
| Layer | Availability / license |
|---|---|
| mechanical design | available · GPL-3.0 First-party repository files; no manufacturing source for purchased components inferred. [S001] [S004] |
| electronics | not found · License not fully assessed Complete revision-matched source for this layer was not established in this mechanical repository; external host components require separate assessment. [S001] |
| firmware | not found · License not fully assessed Complete revision-matched source for this layer was not established in this mechanical repository; external host components require separate assessment. [S001] |
| software | not found · License not fully assessed Complete revision-matched source for this layer was not established in this mechanical repository; external host components require separate assessment. [S001] |
| documentation | available · GPL-3.0 First-party repository files; no manufacturing source for purchased components inferred. [S001] [S004] |
No learned model or dataset selected for this mechanical configuration.
References
Links identify the documentation and revisions used in this profile. Access dates record when each source was retrieved.
- S001 · JaredC01 and contributors
Project variants and control settings
Accessed 2026-09-30 · README.md at 98f8a37944d7277cd37231776400553cc402219fSource notes
Inspected source text; hardware and procurement not tested.
- S002 · JaredC01 and contributors
G2E intended host
Accessed 2026-09-30 · galileo2_extruder/README.md at 98f8a37944d7277cd37231776400553cc402219fSource notes
Inspected source text; hardware and procurement not tested.
- S003 · JaredC01 and contributors
Printed-part option selection
Accessed 2026-09-30 · galileo2_extruder/stl/README.md at 98f8a37944d7277cd37231776400553cc402219fSource notes
Inspected source text; hardware and procurement not tested.
- S004 · JaredC01 and contributors
Repository license
Accessed 2026-09-30 · LICENSE at 98f8a37944d7277cd37231776400553cc402219fSource notes
Inspected source text; hardware and procurement not tested.
- S005 · JaredC01 and contributors
G2E assembly manual, 14 May 2024
Accessed 2026-09-30 · manuals/Galileo_2_Extruder_Assembly_Manual.pdf at 98f8a37944d7277cd37231776400553cc402219fSource notes
Inspected source text; hardware and procurement not tested.
Correction guidance · Discussion is not enabled · Profile format 0.6.0-draft.1
Change history
2026-09-30 — Replaced duplicate CAD still with an attributed upstream image; image scope and reuse evidence reviewed.