Build Volume
Dimensions
Technology
Discover FS621M System

The build Station module is where the sintering process takes place. Once the build cartridge is in place, the build packet files would be loaded into Farsoon’s BuildStarTM operating software, then the build process begins. The build chamber is featured with front and rear access door for ease of operation.
The build cartridge is moved to breakout station via the internal conveyor system. The Breakout Station is fully enclosed and is accessed through glove boxes on 3 sides of the station allows the capability of multiple operators while retaining a clean working environment. The convenient air-gun and vacuum hose access allow for gentle powder removal and detailed cleaning.
The FS621M’s integrated filter module features secondary circulating system and a dual-station filter design that allows for the exchanging of filters without disturbing the build process.
The powder sieving station features a vibration screen offering efficient sieving of recycled metal powder from the overflow & recycled powder hoppers to filter the large particles.
Located under the Build Station of FS621M, the modular Overflow Powder Hopper collects the excessed powder from the build chamber to be processed at Sieving Station.
Conveniently located under the FS621M’s integrated Breakout Station, the modular Recycled Powder Hopper collects the excessed used metal powder from the part cake to be processed at Sieving Station.
The modular, fully-sealed Powder Supply Hopper offers efficient powder supply under invert gas protection; It features a common design with the Refreshed Powder Hopper for ease of transportation and material quality control.
After the sieving process, the metal powder is collected and stored in the refreshed powder hopper. It can be reused for powder supply or further processing or monitoring according to the application needs.
Extra-Large Build Volume
Developed with a focus on large build size, Farsoon’s FS621M features one of the largest metal laser sintering build volumes in the additive market, with a build platform size of 620x620mm and vertical axis of 1.1 meter. This expansive build envelope opens new possibilities for large-scale metal production that couldn’t be built before in industries such as aerospace, oil and gas, and many others.
Productivity + Quality
The FS621M can be equipped with a powerful single 1000W laser or quad 500W lasers allowing for great rates of production. In addition, the FS621M like all Farsoon systems is a truly open platform which offers the user a high degree of control to tailor build parameters for cost- competitive metal additive manufacturing. An advanced dynamic 3-axis scanning system, powerful build process controls & real-time recoating monitoring ensuring the best build quality.
Operational Ease
The FS621M’s integrated filter module features secondary circulating system and a duakstation filter design that allows for the exchanging of filters without disturbing the build process. The FS621M powder handling processes share a common powder container design which are used during loading, unloading and sieving procedures. These containers offer fully-sealed powder handling, easy transportations between the stations, and safe storage of powder. This partially closed powder system allows for the capability of continuous feeding of powder to the build while retaining the ability to easily exchange and monitor powder quality.The large-frame FS621M metal system offers unparalleled production edge for large-scale applications that favors higher Z axis. Taking the feedback from the broad industrial user base from aerospace, oil & gas, and energy sectors , the FS621M system is fully optimized for batch production capabilities with materials such as titanium alloys, aluminum alloys, nickel-based superalloys, stainless steels and maraging steels.
Deep Blue Aerospace Combustion Chamber
Machine: FS621M
Combustion Chamber of Rocket Engine
Machine: FS621M-4

Turbine components (blades, nozzles, heat shields) Rocket parts such as thrust chambers and injectors Lightweight structural elements in Ti6Al4V and TA15 High-temperature alloys like IN718, HX, and Haynes 230 enable safe operation in combustion zones
Orthopedic implants and prosthetics with Ti6Al4V Surgical instruments requiring corrosion resistance and sterilizability (316L) Custom metal parts for devices and supports
Customized ducts, housings, and brackets Heat-resistant and mechanically tough engine bay components Small series production of interior trims and connectors
Material development and testing thanks to the open-platform architecture University and defense labs exploring next-gen alloys and geometries Simulation validation with real-world builds of complex test samples

Mold inserts, tooling blocks, and die components using maraging/tool steels Heat exchangers and manifolds with optimized internal channels High-strength wear parts for heavy-duty machinery
Corrosion-resistant parts in IN625 for harsh chemical exposure Heat and pressure-resistant components for turbines and downhole tools Large-scale valve bodies, pump housings, and lattice-supported structures