Size is one of the major limiting factors within the 3D printing space. It has been difficult and extremely expensive for companies to produce 3D printed object of any substantial size. This seems to be slowly changing as 
In an incredible advancement within the large scale 3D printing space, Lockheed Martin’s Space Systems Company has teamed with RedEye, a Stratasys company, to 3D print two large fuel tank simulators for satellites. The purpose of the fuel tanks are to act as a prototype for the eventual tanks, which will be constructed at a later date. The 3D printed tanks will be used in form, fit, and function validation testing. The larger of the two 3D printed parts, created with RedEye’s fused deposition modeling technology, measures a staggering 15 feet in length, making it one of the larger objects ever created by this technology.
“With RedEye’s machine capacity and engineering support, we were able to successfully build these tank simulators in a fraction of the time and at a fraction of the cost,” said Andrew Bushell, senior manufacturing engineer at Lockheed Martin Space Systems Company.
The 15 foot tank was built in 10 different pieces, and the smaller of the two tanks had to be constructed in six pieces. Together, both tanks took over two weeks to fully print, but saved Lockheed Martin an estimated 50% in costs, as compared to traditional machining of the parts. It has also saved the company a tremendous amount of time, allowing them to bring their new tank design to market faster, leading to a less stressful contract bid process.
“This project is unique in two ways – it marks the first aerospace fuel tank simulation produced through additive manufacturing and is one of the largest 3D printed parts ever built,” stated Joel Smith, strategic account manager for aerospace and defense at RedEye. “Our ability to accommodate such a large configuration and adapt to design challenges on the fly, demonstrates that there really is no limit to the problem-solving potential when you manufacture with 3D printing.”
Lockheed Martin has had a close relationship with RedEye since 2012, and has used their 3D printing technology on various projects over the last couple of years. They also have plans for further collaboration on 3D printing projects later this years. Discuss these amazing 3D printed fuel tanks at 3DPB.com. Check out the video below. The entire case study done by RedEye can be accessed here.