One basic principle in reviewing a casting design is Geometric Dimensioning & Tolerancing (GD&T). This system defines and communicates engineering tolerances through symbolic language on engineering drawings. It explicitly describes the part geometry and allowable variations. Using GD&T helps the customer’s design engineer, the supplier’s manufacturing engineer, and quality inspectors to reach consensus on a…

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Guest post by: Daniel Ribeiro da Silva, Materials Engineering, Metallurgist and Lean Six Sigma Black Belt As a typical Foundryman, I am passionate about the foundry environment and the metallurgy science behind the castings’ manufacturing process. This inspiration also comes from my father, who has worked for more than 40 years in the foundry business.…

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At The C.A. Lawton Co. (Calco), we are proud of the reputation our foundry has built over the last two centuries; a reputation for quality, on-time iron casting solutions alongside high-touch customer service. In this series of blog posts, we will be highlighting the “Lawton Difference” and how Calco makes the difficult task of procuring…

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