To address the quality issues we continue to be successful in implementing our PrintRite3D® product with major North American aerospace customers.

SANTA FE, N.M., April 22, 2014 -- Sigma Labs, Inc. (OTCBB: SGLB), a developer of advanced, real-time, non-destructive quality inspection systems for 3D metal printing and other advanced manufacturing technologies, today announced it has signed a Technology Cooperation Agreement with Materialise NV of Leuven Belgium. The agreement sets forth the parties' intent to collaborate technically and commercially in the integration, production and marketing of PrintRite3D® software-related products for metal-based additive manufacturing.

Mark Cola, President and Chief Executive Officer of Sigma Labs, Inc. stated that, "We remain focused on the three problems that are in part slowing the growth of the additive manufacturing market for metal-based, performance-critical parts, namely: quality, geometry, and productivity. To address the quality issues we continue to be successful in implementing our PrintRite3D® product with major North American aerospace customers. By further integrating our PrintRite3D® software technology with Materialise's additive manufacturing software, we believe that we will reach the broader additive manufacturing market sooner and be able to assist a larger number of AM users with achieving their in-process inspection needs more quickly. A software package for additive manufacturing which incorporates our PrintRite3D® in-process inspection technology enables users to more quickly achieve rapid qualification with greater process reliability without having to wait until the end of the manufacturing process. This would save users money by eliminating expensive post-process inspection technologies."

Karel Brans, Strategic Partnership Manager of Materialise, added that, "Materialise has a long and distinguished history of innovation in the field of software for additive manufacturing (AM). Materialise offers solutions for every step of the AM process. This set of solutions form a platform for 3D Printing, which enables the importation of data from different sources and applications and connection of this data to the wide range of technologies and 3D printers. With Streamics automation and control system, the platform also supports the workflow in an AM environment, automating several steps along the way and assuring quality and traceability. It is intended to be an open platform that can link to innovative tools and technologies that complement the Materialise portfolio. Linking the Sigma Labs PrintRite3D® product to our software platform enables our mutual users to benefit from this valuable technology from within their trusted Materialise environment. We are pleased to work with Sigma Labs to help bring this quality inspection software technology to market."

About Sigma Labs, Inc.

Sigma Labs, Inc., through its wholly-owned subsidiary B6 Sigma, Inc., develops and engineers advanced, real-time, non-destructive quality inspection systems for commercial firms worldwide seeking productive solutions for 3D metal printing and other advanced manufacturing technologies. For more information please visit us at www.sigmalabsinc.com.

About Materialise

With its headquarters in Leuven, Belgium, and branches worldwide, Materialise has been playing an active role in the field of Additive Manufacturing (AM) since 1990. In addition to having the largest single-site capacity of AM equipment in Europe, Materialise also enjoys a stellar reputation as a provider of innovative software solutions. They have used their experience and expertise to create a better and healthier world through their involvement in AM for industrial and medical applications, and by providing bio-medical and clinical solutions such as medical image processing and surgical simulations. Materialise has developed unique solutions that make a world of difference for its many customers with their prototyping, production, and medical needs. These customers range from large companies in the automotive, consumer electronics, and consumables sectors; to famous hospitals, research institutes, and clinicians; to individual consumers interested in bringing their own unique creations to life through i.materialise or who want to purchase a celebrated .MGX design. For more information please visit: www.materialise.com.