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3D Printed Jet Engine - The story PDF Print E-mail


About two years ago an acquaintance of mine and I decided to develop something made completely with 3D printing that was not a plastic toy but instead was a real, working product. What we came up with stems from my own personal hobby, Radio Control Airplanes. The result, a working turbine jet engine made using EOS DMLS (Direct Metal Laser Sintering) technology.

EOS DMLS 3D printing is a terrific technology that most people don't  really have access to you outside of the industrial sector. It is indeed 3D printing but it has some unique challenges to design around. 3D Printing metal requires structures and supports that are VERY difficult to remove when you have overhangs.

DMLS is NOT for everything but in this case, it works beautifully for a 3D-printed turbine.

The project has taken two years, working in my spare time mostly which isn't much but I think the results are quite impressive and the engine will work, I am sure of it. The only parts that are not 3D printed are the turbine shaft which was made on a lathe and the ceramic ball bearings. The materials used include Aluminum, Inconel and Stainless Steel.

Power will be in the 55-65 lb thrust-class with RPM's at or above 80,000 rpm. The engine was tested and simulated using SolidWorks FEA simulation and flow analysis. The results are terrific. Along the path of design, we identified part count reduction that could make an engine out of 5 parts, down from 12 to 7 parts.


Something else that happened along the way was the discovery that we could improve performance with geometry that was difficult to make using traditional manufacturing. For example: we were able to add bleed-air into the exhaust stream to reduce the temperatures of the exhaust gases which should improve the longevity of the turbine hot section. We also were able to create a beautiful casing for the turbine that is much more visually appealing that other turbines with the design. Finally, we also now believe that we can create a multi-stage axial flow compressor unit which essentially means more efficient engines.

FLIGHT TESTING: Coming Soon...

World Maker Faire 2013--Sept. 21 & 22, 2013 PDF Print E-mail

On Sept. 21 and 22, Kraftwurx will take part in the fourth annual World Maker Faire in New York City, New York. Marketed as the “greatest show and tell on earth,” the World Maker Faire is a festival of invention, innovation and creation that’s family friendly and perfect for all ages. The event is expected to draw a crowd of more than 65,000 people from across the country and will take place at the New York Hall of Science located in Flushing Meadows, Queens. During the festival, Kraftwurx will be available to discuss 3D printing, how it can help inventors and creators realize their ideas and more.

About Maker Faire

The Maker Faire was first launched in 2006 in the Bay Area of California. Since then, the event has expanded, appearing annually in the Bay Area, New York City, Tokyo and Rome. In 2012 alone, more than 165,000 people attended Maker Faire events across the world.

Maker Faire exhibitors hail from all industries, including art, science, engineering, architecture, manufacturing and more. One common thread binds them all: innovation. Exhibitors featured at the Maker Faire are on the cutting edge of their niche. They’re individuals, entrepreneurs and companies who are utilizing groundbreaking technologies, inventing new products and changing the way the world works.

In addition to learning about exhibitors and viewing showcases, Maker Faire attendees can participate in hands-on, how-to workshops; see inspiring presentations and panels; and take part in live product demonstrations. Fair-goers can also enjoy fun attractions like a life-size mousetrap, drone and robot building, DIY puppets, Coke-Mentos fountains and more.

Visit World Maker Faire

Stop by and see us at the 2013 World Maker Faire, along with hundreds of other innovative individuals and companies. Tickets are available in advance (and at a reduced price) at

What is with the Über? PDF Print E-mail

According to Wikipedia, during the 2000s, Über became known as a synonym for super due to games and gamers excessively using the word. We chose because we wanted to convey that Kraftwurx, like the word Über (which translates to over, above, beyond) is the best or ultimate Customization Site on the internet.

3D Printing Community: Building The Krafters of Tomorrow PDF Print E-mail

Welcome to Kraftwurx. I want to personally welcome you to the website. Its been a very long road to get here indeed. In 2004, I stumbled upon a website called "Customatix" or was a precursor to Nike ID. I was intrigued by the idea of marrying CAD with a website to allow everyone to "customize their own products in a WYSIWYG fashion, similar to the way Vista Print, Cafe Press and Zazzle do with 2D printing.

It took just two years to formulate a business plan and file patent protections for a completely new way to process orders and make products for consumers. It wasn't the customers making the products that was the challenge at the time, it was how to handle 10's of thousands of 3D models flowing through a website at once and how to keep it all organized that we focused on.

From those ideas and patents emerged Digital Factory, based on our Made-To-Order Digital Manufacturing Enterprise system. Its the culmination of a lot of work and the end result is a great way to empower consumers for mass-customization and empower manufacturing to deliver it!

We hope that you enjoy the site and and look forward to seeing you all on

The Big Idea PDF Print E-mail

A lot of people have asked where Kraftwurx started. The truth is that Kraftwurx started in 2004 with the idea of creating an online community that could "empower consumers for Mass Customization" with an infinite array of products manufactured by 3D Printing. It represented the ultimate in creative freedom where 3D Designers and Digital Artists could showcase and sell 3D designs in an online marketplace.



The idea was more than simply selling a 3D model. It was about converting a 3D model into a real product ready for consumer purchase. It is called Direct Digital Manufacturing, and it is now a reality. Kraftwurx is the vanguard of the next Industrial Revolution.

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