Achieving greatness with craftsmanship and technology.

Built through continuous investment.

Precision Advanced Machining traces its roots back to 1937, when the company, first known as Precision Boring, began with the purchase of a single Swiss jig borer. As technology and the craft of manufacturing have evolved, so has our business. Each generation has expanded capabilities, invested in new equipment, adopted emerging technologies, and refined the production systems required to meet increasingly demanding applications.

Today, that same commitment continues through advanced CNC machining, large-part manufacturing, precision grinding, integrated inspection, and production workflows built for modern aerospace, defense, industrial, and scientific customers. With a total of 53,000 sq ft across our three buildings on Maplehurst Drive—35,000 sq ft, 15,000 sq ft, and 3,000 sq ft—we have the space needed to efficiently serve our customers.

1937

Founded in Detroit by two brothers.

Four generations

Continuous family involvement, ownership, and manufacturing leadership.

Next generation

Advanced CNC manufacturing for demanding industries and production at scale.

Generations of progress.

While Precision Advanced Machining was established in 1937, the company’s foundation took root in the years prior. Nestor J. Decker, one of the founders of Precision, gained more than 20 years of manufacturing experience at National Pattern Manufacturing Company.

Tool shop at the National Pattern Manufacturing Company in 1916

Hotchkiss Era

  1. 1916

     

    National Pattern Manufacturing Company

    Nestor J. Decker, co-founder of the company that would later become Precision Advanced Machining, begins his career in precision machining at National Pattern Manufacturing Company.

  2. 1929

     

    New Ownership

    National Pattern Manufacturing Company is acquired and renamed Hotchkiss Tool & Engineering Co.

  3. 1937

     

    Precision Boring Company Founded

    While still employed at Hotchkiss, Nestor collaborates with his brother Frank to found a new venture, Precision Boring Company. They establish the company with the purchase of a SIP jig borer manufactured in Geneva, Switzerland.

  4. 1941

     

    Majority Owner

    Nestor becomes majority owner of Hotchkiss Tool & Engineering and moves company operations to 8200 Lynch Road in Detroit.

  5. 1972

     

    Company Assimilation

    Hotchkiss Tool is absorbed into Precision Boring after the death of Nestor J. Decker.

The first machine bought by Precision Boring, a SIP Jig Borer

The Next Generation

  1. 1937

     

    Precision Boring Company Founded

    Nestor and Frank Decker found Precision Boring on Detroit’s east side with the purchase of the first Swiss SIP jig borer in Michigan. Frank operates the machinery while Nestor oversees the book work.

  2. 1941

     

    New Facilities

    After operating out of a garage for its first four years, Precision Boring constructs a new building at 8200 Lynch Road in Detroit and moves its operations into the building alongside Hotchkiss.

  3. 1978

     

    Second-Generation Ownership

    Brothers Nestor Jr. and Richard Decker buy Precision Boring Co.

  4. 1994

     

    Third-Generation Ownership

    Brothers Richard Jr. and Jerry Decker buy Precision Boring Co.

  5. 2004

     

    Clinton Township Relocation

    All operations are moved with the purchase of a building at 24400 Maplehurst in Clinton Township. Within a year, Precision continues to expand with the purchase of Manor Industries Inc.

  6. 2015

     

    Expansion

    A second building on Maplehurst is purchased.

  7. 2016

     

    Fourth-Generation Involvement

    Siblings Sarah and Joe Decker begin their careers at Precision Boring.

  8. 2021

     

    Rebranding & AS9100 Certified

    Precision Boring Company is renamed Precision Advanced Machining Co. and attains AS9100 certification.

  9. 2022

     

    Ownership Change

    Richard Jr. retires after working at Precision for 50+ years, handing sole ownership to Jerry.

Experience that improves every process.

Nine decades of manufacturing experience shape more than just our history; they influence how we approach every production program, from quoting and process planning to machining, inspection, and delivery. By combining proven manufacturing practices with modern equipment and dedicated investment, Precision Advanced Machining helps customers move from concept to production at scale.

Fourth-generation family business

American manufacturing since 1937

Investment in people and technology

Complex production expertise

Built for long-term partnerships

People-first workplace

Built for the next generation of manufacturing.

Precision machining.
Built for production.

Michigan-based · Family-owned

Contact

(586) 463-3900

24400 Maplehurst
Clinton Township, MI 48036

Request A Quote

© 2026 Precision Advanced Machining Co.