Special Processes Institute
September 2016 – September 2026
Celebrating 10 Years of the Special Processes Institute
A decade of sharing technical knowledge, supporting professional development and promoting greater understanding of special processes across manufacturing, aerospace, defence and engineering.
Celebrating 10 years in September 2026
Now available
SPI Web Apps are now freely available
Access interactive engineering, quality and special process tools directly in your browser — free to use, with no installation required.
Explore Web AppsThe Special Processes Institute (SPI) is a free professional and educational resource for special processes used in manufacturing, aerospace, space and defence engineering.
SPI provides technical information, process guidance, publications, downloads and membership resources for processes including: