Contract Mfg & Prototyping


Optimal Design, a Deloitte business, is focused on giving our clients effective options for prototype parts.

Optimal Design’s onsite prototyping facility is designed to accommodate engineering builds. Our integrated testing, quality, and procurement teams ensure each product prototype is built to your exacting standards. Coupled with our global supplier connections, our clients receive the benefit of one point of contact and the advantage of preferential pricing.

Optimal Design has expanded the scope of prototyping quality parts and adapted it using the new features and capabilities of the latest technology. As the Industrial Internet of Things impacts business, incorporating additive manufacturing and 3D printing, we can help your business stay competitive.

Our integrated testing, quality, and procurement teams ensure each prototype is built to your exacting standards. We’ll work to give you fast, accurate representations of your concept to meet your satisfaction with a variety of methods to suit your timing and budget.

Why choose us

  • Speed from concept to prototype
  • Flexibility to run low-to-medium prototyping volumes
  • In-house engineering & NPI Teams
  • High quality, complex assembly of tech-based prototypes

Onsite NPI Engineering Team

Our world-class New Product Introduction (NPI) engineering team has supported the realization of hundreds of products throughout consumer, industrial, and medical industries. Our NPI team sets a firm foundation for each customer-specific manufacturing solution and engages throughout the process to support clients as they aim to achieve required functionality, quality, and standards for their products. NPI support activities include:

  • DFM/DFA analysis
  • Test & quality plan development/implementation
  • Production validation testing
  • Prototype build troubleshooting


Headquartered in suburban Chicago, the Optimal Design’s prototyping facility is co-located with the engineering hub spanning +50,000 sq ft with onsite test labs for electrical, mechanical, and RF/antenna.

Rapid Prototyping

Product development is fast moving and requires capabilities that accelerate the development process. In order to compress timelines, Optimal Design, a Deloitte business leverages its own prototyping facility to expedite design iterations.

  • 3D Acrylic Printing
  • SLA/SLS Rapid Prototyping
  • Urethane Castings
  • CNC Machining

Prototype Tooling

Our teams have sourced and qualified hundreds of prototype and production tools both domestically and offshore for our clients. We have spent the past two decades identifying, qualifying, and working with our global tooling partners and are able to provide a single point of contact.

  • Injection Molds
  • Die Casting
  • Progressive Dies