John Riskalla is a six sigma black belt who has led multiple six sigma projects, and trained many teams in the six sigma methodology both in the United States and Europe. 

A metallurgist with over 40 years experience, he has spent his entire career in metals manufacturing and fabrication. He has managed and engineered metal casting operations, metal manufacturing operations, process re-design, and plant layout. His efforts have saved companies millions of dollars in excess labor, scrap reduction, inventory reduction, and top line growth.

Six Sigma is a system which utilizes a team to control the output of a process more precisely, accurately, and consistently by identifying and controlling the Key process variables.


The results are less scrap, less rework, and less inspection time. Extra operations are discovered and removed resulting in  improved delivery performance, happy customers and more engaged employees.

Six Sigma Black Belt