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Snapmaker, a 3D printing hardware manufacturer, and Phaetus, a developer of extrusion components for 3D printers, have released the Snapmaker × Phaetus Liber High Flow Hotend for the Snapmaker U1. Liber technology is based on E3D’s FlowCore technology platform. Jiangsu Runice 3D Technology manufactures the $34.99 accessory under license to E3D’s high-flow patents. E3D, a developer of fused deposition modelling (FDM) technology, identifies Liber as the first original equipment manufacturer (OEM) product on the market carrying the FlowCore mark.
Liber integrates a split-flow melt channel, a DLC-coated hardened-steel nozzle, and a precision-machined seamless heat break in a U1-specific assembly. Snapmaker’s test results show volumetric flow increases of 66% with PLA, 87% with ABS, and 43% with PETG HF compared with the U1 Stainless Steel Hotend under matched energy-use conditions. Dividing the melt path into multiple channels increases the effective surface-to-volume ratio, helping heat reach the filament core. Higher throughput can reduce melting-capacity constraints during large models, long perimeters, and broad infill sections. Snapmaker’s release did not provide further test parameters or independent verification.
“U1 continues to grow with its users,” said Mickey Ke, chief operating officer at Snapmaker. “The growth of its accessory ecosystem is central to that vision. By combining Snapmaker’s platform engineering with the specialized expertise of partners such as Phaetus, we can respond to a wider range of user needs and continue adding value throughout the product’s lifecycle. This collaborative approach also reinforces what the Snapmaker brand stands for: products that remain adaptable, capable, and closely connected to real-world creative workflows. The Liber High Flow Hotend is an important step in building that ecosystem and lays the groundwork for further collaboration around U1.”
FlowCore is a licensing program covering E3D’s high-flow extrusion technology for additive manufacturing, including its recently announced FUGE portfolio and related flow-improving intellectual property. E3D publishes the covered patents in full, creating a public register of the granted rights used by products carrying the mark. Discussions with additional parties are underway, and the register is expected to expand. “For many years our industry has thrived on partnership and collaboration. At E3D we believe this is the ultimate way to bring a great experience to everyone that uses a 3D printer. I’m grateful to the manufacturers who share this vision and are working with us to formally recognize intellectual property in the desktop market. More work needs to be done across the industry to recognize the work of others, which in turn builds consistent quality rather than stifling innovation – and we intend to set a precedent with FlowCore,” said Clare Difazio, head of commercial at E3D.
Liber’s hardened-steel nozzle carries a rating of HV 725–780 and a wear-resistant DLC coating. Its heat break has an internal surface roughness of Ra ≤ 0.2 μm, micron-level machining tolerances, and precision-mated end faces intended to reduce material adhesion, leakage, and clogging. “We are delighted to partner with Snapmaker on the Liber High Flow Hotend,” said Donald Wan, chief technology officer at Phaetus. “Snapmaker’s rigorous engineering and focus on user experience complement Phaetus’ extrusion expertise. Working closely, our teams combined high melt-flow performance, precise control, durability, and ease of use in a solution developed for U1. This collaboration is an important step toward a more open technology ecosystem, and we look forward to working with Snapmaker to advance 3D printing innovation and adoption.” A four-hotend bundle costs $119, while prices may vary by market.
U1 upgrades target separate multicolor constraints
When Snapmaker launched the U1, its four independent toolheads tackled the waste and delay of multicolor filament changes. Dedicated nozzles avoid purging between changes, while toolheads switch in five seconds. Snapmaker lists waste reductions of up to 80% and multicolor print times up to five times shorter than conventional systems. At a stated 500 mm/s, however, sustained melting capacity remains a separate limit.
Snapmaker hired Radu “Ratdoux” to pursue Full Spectrum integration with Snapmaker Orca. His experimental slicer creates intermediate colors by alternating filament layers and using visual blending. That approach expands the visible palette but does not provide full-color 3D printing or alter the hotend’s physical flow capacity. Liber addresses that hardware constraint through its melt path, nozzle, and heat break.
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Featured image shows Donald Wan, Chief Technology Officer at Phaetus, presents the Liber High Flow Hotend for U1. Photo via Snapmaker.
