Made to order
- US installation commissioning and operator training included
- Validated parameters a parameter set for your first production alloy
Farsoon FS621M LPBF Metal 3D Printer – Four Configurations up to 1.7 m Tall | 24.4×24.4×43.3 in / 620×620×1100 mm
The Farsoon FS621M is a metal LPBF 3D printer with a 24.4×24.4×43.3 in / 620×620×1100 mm build envelope, running four or six lasers at 500 W or 1000 W depending on configuration.
- ✓ 4 — configurations supplied
- ✓ 24.4×24.4×43.3 in / 620×620×1100 mm build envelope
- ✓ Open platform — full access to process parameters, qualify your own alloy
- ✓ Lead time: built to order — confirmed at quote
Installation and commissioning in the USA: facility and gas planning, start-up and operator training by our US service team.
What your process engineer actually checks
Pick the envelope, keep the platform
1.1 m on the -4 and -6, a wider 808 mm plate on the Pro-6, 1.7 m of vertical axis on the -U-6. If your part is currently welded from sections because nothing could build it whole, one of these four changes that answer.
An applications engineer on the line
Not a ticket queue — engineers who run LPBF in production in-house at AO Metal. Alloy qualification, parameter development, troubleshooting. Sub-4h reply, NDA standard.
The Farsoon FS621M is a large-format LPBF platform sold in four configurations — FS621M-4, FS621M-6, FS621M Pro-6 and FS621M-U-6 — from a 24.4×24.4×43.3 in / 620×620×1100 mm envelope up to 620×808×1200 mm on the Pro and a 1.7 m vertical axis on the -U. It builds parts that used to be welded from sections: rocket combustion chambers, large aerospace and energy hardware.
Why engineers choose the FS621M
Four things your process engineer will check first.
Four envelopes on one platform
620×620×1100 mm on the -4 and -6, 620×808×1200 mm on the Pro-6, and a 1700 mm vertical axis on the -U-6. A part that used to be welded from sections comes off one of these plates whole, and the joints stop being a failure mode.
From four to six lasers, 500 or 1000 W
4×500 W or 4×1000 W on the FS621M-4, six 500 W lasers on the -6 and -U-6, and 6×500 W or 6×1000 W with Beam Shaping on the Pro-6. An advanced dynamic 3-axis scanning system and real-time recoating monitoring across all of them.
Change filters without stopping the build
A dual-station filter design with a secondary circulating system lets filters be exchanged mid-build. On a 258-hour job that is the difference between finishing and scrapping.
Partially closed powder system
Shared sealed containers for loading, unloading and sieving, with continuous powder feeding to the build. Powder quality stays monitorable on jobs that run for days.
How we deliver and support it
What happens between the purchase order and your first qualified part.
Scope the cell
We size the configuration against your part mix, then plan power, argon or nitrogen supply and extraction with your facilities team. Machine envelope is 228.3×169.3×157.5 in / 5800×4300×4000 mm; EUR/China: 400V±10%, 3~/N/PE, 50Hz, 40A. The US transformer ships with the machine.
Install and train in the USA
Commissioning and operator training by our US service team. First builds are run together, so your operators hand over parts rather than a checklist.
Parameters, spares, engineer
Validated parameter sets for your alloy, US-held spares, and an applications engineer who has run LPBF in production in-house at AO Metal. Sub-4h reply, NDA standard.
What the FS621M is built for
Large-Format Metal LPBF in four configurations, from 1.1 m to 1.7 m of vertical axis. The FS621M runs four or six lasers at 500 W or 1000 W depending on configuration over a 24.4×24.4×43.3 in / 620×620×1100 mm build envelope. Full specifications are in the Specifications tab below.
Four configurations on one platform
Farsoon builds the FS621M in four configurations. The powder handling, the filtration and the open parameter access are the same across all of them — what changes is the envelope and the laser count. We supply and support all four.
| Configuration | Build envelope | Lasers |
|---|---|---|
| FS621M-4 | 24.4×24.4×43.3 in / 620×620×1100 mm | 4×500 W, optional 4×1000 W |
| FS621M-6 | 24.4×24.4×43.3 in / 620×620×1100 mm | 6×500 W |
| FS621M Pro-6 | 24.4×31.8×47.2 in / 620×808×1200 mm | 6×500 W or 6×1000 W with Beam Shaping |
| FS621M-U-6 | 24.4×24.4×66.9 in / 620×620×1700 mm | 6×500 W |
Configurations as listed by Farsoon. Which one pays back depends on your part envelope and annual volume.
Farsoon has also announced the FS621M-Cu, a copper-alloy version of this platform running four 1000 W ytterbium fibre lasers, developed for thrust chamber liners. Ask us if copper is on your roadmap.
Powder handling and workflow
Qualified materials
Farsoon lists IN718, HX and AlSi10Mg as qualified grades, with HAYNES 230, TA15, Ti6Al4V, IN625 and 316L in process development for the FS621M. Because the platform is open, a grade outside that list is a parameter development project rather than a dead end, and one we can run with you. The alloys we stock are lot-certified and held in the USA.
Typical applications
Where FS621M systems are actually running.
A production case, in numbers
| Rocket engine combustion chamber, IN718 | Figure |
|---|---|
| Machine | FS621M, quad lasers |
| Material | IN718 |
| Part size | 23.6×19.5×22.0 in / 600×496×558 mm |
| Layer thickness | 0.0016 in / 0.04 mm |
| Print time | 258 hours |
Case as published by Farsoon for the FS621M.
A 780 mm combustion chamber in one piece
Farsoon also publishes a larger chamber built on this platform with Deep Blue Aerospace: an Inconel combustion chamber 780 mm tall and 550 mm in diameter, printed as a single part. At that size the challenges are the build height itself, full-height thermal stability and keeping powder supplied for the whole run — which is what the 1.1 m axis and the continuous feed are for.
Not sure the FS621M is the right frame size?
Three Farsoon LPBF platforms either side of it.
Long rather than tallFarsoon FS721MView printer →
Current large formatFarsoon FS812M-UView printer →
Why source the FS621M through Additive Plus
- US sales, installation, commissioning and operator training by our own service team.
- Applications engineering from a team that runs LPBF in production in-house at AO Metal — parameter development, not a ticket queue.
- Lot-certified metal powders stocked in the USA for the alloys this machine runs.
- Leasing and financing available on capital equipment.
- Print a paid benchmark part in California before you commit to a system.
- Response under 24 hours · 200+ AM systems delivered across 23 countries.
| Brand | Farsoon Technologies |
| External Dimensions (L×W×H) | 228.3×169.3×157.5 in / 5800×4300×4000 mm |
| Build Volume | 620×620×1100 mm (24.4×24.4×43.3 in) |
| Net Weight | Approx. 19842 lb / 9000 kg |
| Layer thickness | 0.0008–0.0039 in / 0.02–0.1 mm |
| Scanning Speed | Max. 49.9 ft/s / 15.2 m/s |
| Laser Type | Quad Lasers, 4×1000W, Quad Lasers, 4×500W, Six Lasers, 6×1000W with Beam Shaping, Six Lasers, 6×500W |
| Scanner | F theta lenses or dynamic focusing system |
| Inert Gas Protection | Argon/Nitrogen |
| Average Inert Gas Consumption in Process | 8 - 10 L / min |
| Operating system | 64 bit Windows 10 |
| Software | BuildStar, MakeStar® |
| Data File Format | STL |
| Key Software Features | Open machine key parameters, real-time build parameter modification, three-dimensional visualization, diagnostic functions |
| Power Supply | EUR/China: 400V±10%, 3~/N/PE, 50Hz, 40A · US: transformer supplied with the machine |
| Operating Ambient Temperature | 71.6-82.4 °F / 22-28 °C |
| Material | 316L, AlSi10Mg, HAYNES 230, HX, IN625, IN718, TA15, Ti-6Al-4V |
| Technology | Metal LPBF |
| Printing Materials | Metal Powders |
Send your STL and we print a paid benchmark part on a Farsoon metal LPBF system in California, with the parameter set and the cost per part written up.
Other products teams run alongside Farsoon FS621M LPBF Metal 3D Printer – Four Configurations up to 1.7 m Tall | 24.4×24.4×43.3 in / 620×620×1100 mm
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- Lead time: configured to order — install, training & scale-up support from California.
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· Lead time: configured to order — request a build slot. Installation, training and process support included from California.
Quad-laser SLA ceramic 3D printer for serial production — a 600×600×300 mm build envelope, four 405 nm UV lasers, and an open architecture that runs any qualified ceramic paste.
- ✓ Largest plate in the 3DCeram line — 600×600×300 mm (23.6×23.6×11.8 in)
- ✓ Support-free top-down SLA · surface roughness under 2 µm
- ✓ Lead time: configured to order — full print → debind → sinter workflow supported
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· Built to order — contact us for the current lead time and installation schedule.
Production-scale multi-material ceramic SLA system: alongside the base ceramic it deposits up to three additional materials in one part, via dispensers from needle valve to micro-distribution, all in CPS 2.0. On an 11.8×11.8×3.9 in / 300×300×100 mm platform with a fine 35 µm UV laser. Full print → debind → co-sinter workflow supported by Additive Plus.
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- Lead time: configured to order — material-set & co-sinter support from California.
Made to order
· Lead time: configured to order — request a build slot. Installation, training and process support included from California.
The Farsoon FS812M-U is a tall large-format LPBF metal 3D printer with a compact footprint — an 810 × 810 × 1700 mm build with eight to ten fiber lasers (500 W or 1000 W), in a frame with 41% less floor space than the prior generation.
- ✓ 810 × 810 × 1700 mm build · 8–10 fiber lasers · 41% smaller footprint
- ✓ Titanium & nickel superalloys · multi-layer gas flow field
- ✓ Lead time: configured to order — US install, training and support
Made to order
· Request a build slot
- ✓ 450 × 450 × 350 mm build chamber — fits a standard shoe last or full fascia panel in one run
- ✓ Solid-state 355 nm Nd:YVO4 laser · 0.08–0.8 mm variable beam · 15.0 m/s max scan
- ✓ Full-marble machine frame (720 kg) — thermal stability for ±0.1 mm part accuracy
- ✓ Lead time: 6–8 weeks — on-site install, calibration & operator training included
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· 2–3 months from order placement. Need it sooner? Talk to a specialist.
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- ✓ 39×39×39 in / 1 m³ fully enclosed build — one-piece large prototypes and tooling
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· Lead time: configured to order — request a build slot. Installation, training and process support included from California.
- ✔ 1.25×1.2×0.7 m build box — wide molds and cores in one piece
- ✔ Plus: 108–180 L/h at ~13 s/layer · High-Speed: 108–180 L/h at ~15 s/layer
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- ✔ Lead time: configured to order — request a quote for delivery & installation
Made to order
· Lead time: configured to order — request a quote for delivery and installation.Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
Which alloys are qualified for the Farsoon FS621M?
Which FS621M configuration should we buy?
Is the FS621M an open system, or are we locked to vendor parameters?
What part size does the FS621M handle, and what fits in one build?
What does installation and training in the USA involve for the FS621M?
How does the FS621M compare with the other Farsoon metal platforms?
Can we test the FS621M before committing to a purchase?
Place your order, or talk to an engineer first
Order Farsoon FS621M LPBF Metal 3D Printer – Four Configurations up to 1.7 m Tall | 24.4×24.4×43.3 in / 620×620×1100 mm direct, or talk to materials engineer