Open 3D Printing
A printer built in the open.
Ultramarine3D is a community-driven FFF 3D printer project — transparent hardware, approachable firmware, and honest documentation.
Printer specs
Key parameters of the Ultramarine3D build.
KinematicsCoreXY, dual stepper
Build volume350 × 350 × 300 mm
FrameAluminum 30-series I6 (Marek)
Linear motionMGN12 rails on X / Y / Z
Z drive3× SFU1204 ballscrews · 3× NEMA 17
BeltsGT2 9 mm
ToolheadEVA 3 · Klicky Probe
HotendPhaetus Rapido 2 HF (52 mm³/s)
ExtruderLDO Orbiter v2.5 (direct drive)
Heated bed350 × 350 × 8 mm Al · dual silicone heaters · PEI
MainboardBTT Manta M8P V2 + Raspberry Pi CM5
Toolhead MCUBTT EBB36 over CAN (BTT U2C)
PowerMEAN WELL XDR-480E-24 + XDR-240E-24
FirmwareKlipper · Fluidd · OrcaSlicer
Print speed150–300 mm/s, ±0.1 mm
Enclosure4 / 6 mm polycarbonate panels
Gallery
Renders, prototypes, and work-in-progress.
Coming soon
Coming soon
Coming soon
Documentation
Download the project documents below.
Project Documentation
Full project overview — FFF 3D printer design, parts, and rationale.
User Manual
Assembly and operation guide — coming soon.
About the project
Ultramarine3D is an independent hardware project focused on building a reliable, approachable FFF 3D printer. Everything — from CAD and STLs to firmware and manuals — lives in one open repository.
The aim is simple: clear documentation, reproducible parts, and no hidden magic.
- KinematicsCoreXY
- TypeFFF / FDM
- LicenseOpen source
- StatusIn development