The Pittsburgh Chapter of the National Tooling and Machining Association is made up of companies that believe in the future o ... f manufacturing for Southwestern Pennsylvania. Our membership, which includes both large and small companies assumes a leadership position in the training and development of future generations for the Metalworking Profession. Our membership is comprised of both companies in the manufacturing industry and those companies (associate members) that recognize the importance of manufacturing for this region. These are the companies that support the metalworking industry in Southwestern Pennsylvania with their time, energy and financial resources. read more