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Sintavia acquires Two M4K-4 Metal 3D Printers to expand Rocket Manufacturing Capability

M4K-4 Metal 3D Printers
Above: The AMCM M4K-4 has a one meter tall build height with four 1kW lasers/Image Source: AMCM GmbH

Sintavia, LLC, a designer and additive manufacturer of critical thermal components for the Aerospace, Defense, & Space industry, announced the acquisition of two M4K-4 metal 3D printers from AMCM GmbH, an EOS group company, based in Starnberg, Germany, to expand rocket manufacturing capabilities.

According to Brian Neff, Sintavia’s Chief Executive Officer, “Since the acquisition of our first M400-4 three years ago, Sintavia has devoted tremendous resources to developing successful and repeatable operating procedures for the quad laser printing of extremely thin walls, such as those found in the thrust chamber of a rocket. We now have eight M400-4 quad laser printers, and we expect that the successful strategies employed on the M400-4 will likewise work on these new M4K-4 metal 3D printer. We are pleased that we will be the first rocket printer in North America to offer the expanded footprint of the M4K-4 to our commercial space customers.”

M4K-4 Metal 3D Printers from AMCM

M4K-4 Metal 3D Printer
Above: The AMCM M4K-4 Laser-powered Metal 3D Printer/Image Source: AMCM GmbH

AMCM is an affiliated company of EOS GmbH that builds customised machines to serve customers whose needs are not met by standardised AM systems. It operates in this specific technology gap that isn’t catered by many.

Each of the two new M4K-4 metal 3D printers, which are stretched versions of the commercially successful EOS M400-4 printer, uses four 1kW lasers to print single-unit components with dimensions of 450mm x 450mm x 1m. As one of the largest rocket printers in North America, Sintavia will use the new machines to expand its portfolio of thrust chamber design and manufacturing for the rapidly growing commercial space industry.

The M4K-4 metal 3D printer design architecture is based on the EOS M400-4 printer coupled with more powerful lasers and an upgraded cooling system. The design of the M4K-4 was driven largely by demand from commercial space launch customers who were looking to optimize thrust chamber assemblies with fewer traditional joining steps. For most existing commercial rocketry currently in production today, the M4K-4 metal 3D printer is able to manufacture the entire thrust chamber assembly as a single unit, including optimized regenerative cooling passages, thereby dramatically reducing manufacturing complexity and time. The two new printers will be delivered in June and July of 2021, and will be installed in high performance copper and nickel alloys.

About Sintavia: Sintavia designs and 3D prints a new generation of flight and launch products for the Aerospace, Defense & Space industry.  The company’s ability to design and serially produce thermally engineered components with complex structural walls of less than 150 microns has unlocked a level of performance impossible to achieve using traditional manufacturing methods.


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