APPLIED GEOMETRICS - Key Persons

Donald Coon

Donald J. Tworek

Donald Tworek passed away on March 4, 2020. Mr. Tworek was the Vice-President and co-founder of Applied Geometrics; Inc. with decades of experience in engineering and corporate management. We at AGI will continue the legacy he started in his honor.

Frank R. Rodericks

Job Titles:
  • Expert at Implementing GD & T
  • Mechanical Design Engineering Expert
Mr. Rodericks is a mechanical design engineering expert. He has over 20 years of experience designing space flight hardware and ground support equipment at Kennedy Space Center in Florida and Marshall Space Flight Center in Huntsville, AL. Frank is an expert at implementing GD&T in both the PTC CREO and Solidworks software platforms, manufacturing of the associated hardware, as well as the ISO 9001 requirements for Quality Assurance. He has instructed GD&T at KSC and throughout Florida's Space Coast for many years and has provided training to engineers, designers, machinist and quality control personnel. Frank regularly participates in ASME Y14 committee meetings, is Senior Level Certified (GDTP #S-3042) and is currently a full-time mentor and instructor with AGI.

Jaime G. Dadez

Job Titles:
  • Mechanical Design Engineering Expert
Mr. Dadez is mechanical design engineering expert with over 35 years of experience in designing with GD&T. He is currently a full-time mentor and instructor with AGI.

Leslie Foster

Job Titles:
  • Business Development Manager / South Lyon, MI
Ms. Foster can assist you with course registration, scheduling, on-site proposals, and all administrative related issues. Leslie can be reached directly at 708-867-5927 or via email at ljfoster@gdandt.com.

Manuel Ortiz

Job Titles:
  • Mechanical Design Engineering Expert
Mr. Ortiz is mechanical design engineering expert with 15 years of experience in designing, manufacturing and inspecting with GD&T. Recently he had been a quality supervisor and CMM programmer/operator. He joined the AGI team as a bilingual (Spanish/English) instructor. He is also translating our GD&T training materials into Spanish. Manuel can instruct both English and Spanish GD&T classes. He is certified in GD&T at the Senior level to the 1994 and 2009 standards.

Mark E. Foster

Job Titles:
  • GD & T Instructors
  • Member of the ASME Y14.2 Committee
  • President / GD & T Instructor / Mentor / South Lyon, Michigan
Mr. Foster is a mechanical engineer with over 30 years of experience in design, quality, and Geometric Dimensioning and Tolerancing (GD&T). He is currently the President of Applied Geometrics, Inc. Mark is a member of the ASME Y14.2 committee and participates regularly in the ASME Y14 meetings throughout the country. Mark has held management positions in Quality Assurance, Manufacturing Engineering, and Design Engineering and is the chief instructor for AGI. He has provided GD&T training for hundreds of individuals and companies, such as Harley-Davidson, Delco Electronics (Delphi), Nissan, Briggs & Stratton, Woodward Governor Company, Dart Container Corporation, Skil-Bosch Power Tools. He has also taught SPC, ISO/QS-900, and Print Reading, as well as Train-the-Trainer classes. Mark was a charter member of the Geometric Dimensioning and Tolerancing Professional (GDTP) Senior Level examination. He passed the first ever GDTP Senior Level exam administered by the ASME and is Senior Level Certified (GDTP #S09-8807) to the ASME-Y14.5-2009 standard. Unlike many GD&T instructors, Mark has applied his training to real-world designs on a regular basis from the design, manufacturing and quality perspectives. This experience and ongoing practical application provide him with the unique ability to relate the common problems that inevitably arise between these groups during the production of a part.