Engineering-Driven 3D Printing You Can Trust

Just In Time Fabrication delivers high-quality, on-demand 3D printing backed by over 30 years of real-world product design and engineering experience.

WHO WE ARE

More Than a 3D Print Shop

Just In Time Fabrication is a professional 3D printing service based in Prosper, Texas, serving clients across DFW and nationwide. We specialize in turning digital designs and ideas into accurate, functional, and reliable 3D-printed parts.

Unlike hobby-level print shops, every project is approached with an engineering mindset — focusing on part strength, material selection, dimensional accuracy, and real-world use.

Built on Decades of Engineering Experience

Company Background

Just-In-Time Fabrication has established itself as a player in the precision 3D fabrication industry, focusing on rapid, custom manufacturing solutions primarily serving the Prosper Texas and Dallas areas. The company is committed to quality and innovation, leveraging advanced technologies to meet the diverse needs of its clients. With a strong emphasis on customer satisfaction, Just-In-Time Fabrication aims to provide tailored solutions that enhance production efficiency and reduce lead times. The founder's experience in the manufacturing sector has been instrumental in shaping the company's vision and operational strategies.

Capabilities

Just-In-Time Fabrication offers a range of capabilities designed to meet the demands of modern manufacturing. The company specializes in custom 3D printing, small-batch production, design support, and rapid prototyping. These services are essential for businesses looking to innovate and bring products to market quickly.

Justin Walker, Founder & Lead Engineer

Just In Time Fabrication is led by Justin Walker, an engineer with over 30 years of product design and development experience. Throughout his career, Justin has designed dozens of successful products across multiple industries and understands what it takes to move an idea from concept to production.

That experience is applied to every print — from design review and material selection to print orientation and final quality. The result is parts that are built to perform, not just display.

Mark Mulder , Co-Founder / Principal Engineer

Mark Mulder has had his own freelance engineering business, Mulder Engineering Services, for the past 20 years. In his past roles as a Design Engineer and a Production Engineer, Mark’s vast experience has helped several design and manufacturing companies grow from infancy to multi-million dollars in annual revenue in a variety of industries including automotive aftermarket, LED lighting, and hobby-grade R/C.

Mark and his wife have been happily married since 2000. They have two teenage sons, PJ and AJ. Mark and Lirio met at the University of Texas at Austin, where Mark earned a B.S. in Mechanical Engineering. While at UT, he was a member of the Society of Automotive Engineers Formula Car Team where he was elected Treasurer.

Mark’s success is due in large part to his passion for helping people by being a contributing member of a winning team by constantly creating new ideas and by challenging his limits of thought and belief. In addition, he has a unique ability to explain complex ideas from his experience serving as Head Coach or Assistant Coach for over 65 of his two sons’ soccer, basketball, and baseball teams over the years.

Who We Help

Inventors and product creators
Small businesses and startups

Engineers and designers
Hobbyists and makers

Contractors and service professionals
Local DFW clients and nationwide customers

What industries in Dallas benefit most from on-demand manufacturing?

Aerospace

The need for precision components and rapid turnaround times makes on-demand manufacturing essential in this sector.

Medical

Custom medical devices and implants require tailored solutions that Just-In-Time Fabrication can provide efficiently.

Automotive

The automotive industry relies on rapid prototyping for testing new designs and components, making Just-In-Time Fabrication a valuable partner.

Whether you need a single prototype or a small production run, we adapt to your needs and timeline.

Focused on Quality, Not Volume

We don’t aim to be the largest 3D printing shop — we aim to be the most dependable. Every project receives hands-on attention to ensure accuracy, consistency, and durability.