Home and Garden What is a foundry hook? What is a foundry hook? Foundry hooks are typically used on chain slings and are designed with a wide deep throat to fit trunnions and handles on molds or castings for foundry work.Apr 3, 2019 Related Posts:The 7 Best Popsicles in the world are available on Walmart.com.How does the forge work foundry?How To Tell if You Have Strep ThroatHow To The crochet shawls are made of yarn.