Our Company

Mack Prototype is an experienced rapid prototyping firm with more than 25 years of industry-leading experience.

Our ServicesWhy Mack?

Our Company

Mack Prototype, Inc. is a wholly-owned subsidiary of Mack Group, Inc, a privately-held corporation that operates 11 manufacturing locations throughout the eastern United States and Mexico. Mack Prototype complements Mack’s growing list of vertically integrated services, including product design, development, custom injection molding, sheet metal fabrication, machining, printed circuit board assembly, complete product assembly, and order fulfillment.

Mack Prototype

Mack Prototype was created when Mack Group acquired Apple Pattern and Compression Engineering in 1999. This acquisition combined rapid prototyping and rapid manufacturing for low volume production applications. Today, Mack Prototype supports customers by working hand in hand with them to develop rapid manufacturing solutions based on customer’s budget, timeline, quantity, and quality requirements.

Mack Prototype is headquartered in Gardner, MA, less than an hour west of Boston, MA, with 75,000 square feet of manufacturing space and a team of project managers, engineers, technicians, operators, and assemblers. Mack Prototype has the tools and experience to manufacture and manage any prototype, development, or production project using 3D printing, additive manufacturing, cast urethane molding, CNC machining, injection molding and new product introduction with the new NPI Launch Lab. In addition to being an ISO 13485:2016 certified medical device manufacturer, Mack Prototype also is FDA and ITAR registered.

Mack Group

A privately held corporation, Mack was founded in 1920 in Little Falls, New Jersey. Today it is headquartered in Arlington, Vermont, with 1.5 million square feet of manufacturing space across operations in Vermont, Connecticut, Massachusetts, North Carolina, South Carolina, Florida, and Mexico.

Mack has earned the highest D&B rating available, 5A1, has no long-term debt, and finances its own acquisitions and growth. Mack has sales of approximately $500 million and employs more than 2500 people.

Our Mission

Mack is to create total customer satisfaction. As part of our mission and culture, Mack employees embrace the following fundamental values, which serve as the foundation for continuous improvement, growth, and success.

Customer Satisfaction



Work Environment

Corporate Citizenship


Divisions of Mack

There are multiple divisions of Mack Group, including Mack Prototype. The other divisions within Mack Group include:

Mack Molding

A leading supplier of molded plastic parts, fabricated metal parts, and high-level assemblies for the medical, industrial, transportation, energy/environment, computer, business equipment, defense, aerospace, and consumer markets. Specialties include design, prototyping, custom injection molding, sheet metal fabrication, full-service machining, complete product assembly, test, and distribution. Services are offered in five locations: Arlington, Vermont (2); Cavendish, Vermont; Inman, South Carolina; and Statesville, North Carolina

Mack Medical

MackMedical, our medical products group, is a focused team of product development, program management, quality, regulatory, document control, purchasing, sales and production staff that are skilled in medical manufacturing. Located at Mack’s headquarters in Arlington, Vt., they manage all medical accounts, from upfront engineering through final manufacturing and distribution. The nucleus of MackMedical is engineering-intensive, and reflects a medical manufacturing culture that understands the industry.

Synectic Engineering

A full-service product design and development company focused on product design, research, prototyping, and manufacturing. Located in Woodbridge, Connecticut, Synectic specializes in custom mechanical, biomedical engineering, industrial design, electrical engineering, quality and regulatory support, rapid prototyping, and “Voice of Customer” research.

Mack Technologies

A leading provider of electronic manufacturing services for highly complex products. Specialties include circuit board assembly, system integration and configuration, test, design support, and fulfillment solutions. Mack Technologies’ global presence includes locations in Westford, MA.; Melbourne, FL.; and Juarez, Mexico.