Welcome! Studiofathom.com, GPIprototype.com and Midwestcomposite.com are now FathomMFG.com Learn more

GPI Prototype is Now Part of Fathom

GPI Prototype

We’re delighted to announce that GPI Prototyping and Manufacturing Services is now a part of Fathom.


See Official Press Release / /
Click Here

Who is GPI Prototype & Manufacturing Services?

GPI Prototype and Manufacturing Services has been providing Direct Metal Laser Sintering (DMLS), also known as Direct Metal Laser Melting (DMLM), services since 2008. As one of the first Metal 3D Printing service providers in the country.

GPI has been dedicated to DMLS/DMLM, producing metal prototypes and end-use parts with complex geometries not possible with traditional machining.

Learn more about DMLS or metal 3d printing quotes for your project.

Who is Fathom? / / Fathom is one of the largest service providers for rapid prototyping and on-demand additive manufacturing in North America. We are driven to create a differentiated customer experience driven by speed, complexity & agility to provide the most unique and impactful on-demand manufacturing in the industry.

Fathom Offers / /

  • 14+ Manufacturing Methods Leveraging Additive

  • Subtractive & Formative Processes

  • Over 125+ Industrial Machines Across 5 Facilities

Main Services Include—But Not Limited To / /

  • Additive Manufacturing & 3D Printing / / SLS, FDM, DMLS, MJF, SLA and PolyJet

  • 3 & 5 Axis CNC Machining

  • Urethane Casting

  • Injection Tooling & Molding

  • Finishing & Assembly

What does the GPI Acquisition mean for the company? / /

With the recent acquisition of GPI Prototype and Manufacturing, Fathom has doubled its metal additive capacity creating a more encompassing DMLS solution for its customers.

DMLS materials to include / /

  • Stainless Steel (PH1, GP1, 316L)

  • Cobalt Chrome (MP1)

  • Maraging Steel (MS1)

  • Aluminum (AlSi10Mg)

  • Nickel Alloy (IN718)

  • Titanium (Ti-64, ELI)

In addition, we are adding EDM capabilities, additional metallurgical analysis equipment and mechanical quality assurance – In-Process Quality Assurance (IPQA) activities.

Fathom holds ISO 9001 and AS9100 Rev D certifications and is ITAR registered


GPI is now part of the largest privately held digital manufacturing service provider in North America.

What does this acquisition mean for GPI customers?

This acquisition will give GPI customers access to a vast amount of additional manufacturing capabilities focused on technical expertise, speed, agility and complexity. We’ve got 13 years of advanced manufacturing experience in metal additive and are looking forward to working with you on your next project or answer any questions you may have about the company!

GPI customers will now have access to our in-house CNC machining, post-processing and finishing capabilities, you’ll find Fathom will fulfill your prototyping and manufacturing needs comprehensively.

With over three decades of experience manufacturing, we have thousands of materials ranging from plastics to polymers to composites and metals. Click here to see Fathom’s service overview / / Download Brochure

Have a prototype or manufacturing project? / /

Going forward, who do I contact for my DMLS/DMLM needs that GPI was handling?

Here are the ways in which you can contact us / /

More About Fathom / /

With a 100+ large-platform industrial grade 3D printing machines and its national footprint with over 200,000 square feet of manufacturing capacity across five facilities, Fathom seamlessly blends in-house capabilities across plastic and metal additive.

Fathom also delivers traditional manufacturing technologies that include CNC machining, injection molding and urethane casting and is sought after for continually making the complex simple for its customers.

Founded over 35 years ago, Fathom is at the forefront of the Industry 4.0 digital manufacturing revolution serving clients in the technology, defense, aerospace, automotive and IOT sectors.


Fathom Works With / /

Every day, companies from all industries trust us with low- to high-volume projects because of our award-winning expertise, speed and commitment to quality. From aesthetic models to functional prototypes to end-use parts on factory floors and store shelves, our experienced team can help you identify what technology and material make the most sense for your application type.


Comprehensive Capabilities for Rapid Manufacturing

At Fathom we offer a unique advantage of speed and agility-our experts help companies go from concept to prototype to manufacturing in ways not previously possible. 

3D Printing / Additive Manufacturing
90+ Machines  
SLS / / Two-day  SLA / / Next-day 
FDM / / Next-day DMLS / / Three-day 
PolyJet / / Same-day MJF / / Two-day
Injection Molding

30 Second Quotes

Prototype Tool / / As soon as 10 days

10K Parts / / 10 days

Production Tool / / As soon as 3 weeks

CNC Machining

3 & 5 Axis Milling & Turning
(Plastics, Composites and Metals)

Tolerance Accuracy Range
from +/-0.001″ to 0.005″

Urethane Casting

Injection Molding Adjacent
without High Costs of Metal Tools

Most Commonly Used for High-Volume
Prototyping & Bridge to Production

Let’s get started.

Fathom is driven by advanced technologies and methods that enhance and accelerate today’s product development and production processes.