Tap or click steps to mark as complete. 1  Cut 1/2-inch-thick slice from rounded bottom of watermelon half to prevent it from rolling around. Scoop watermelon pulp into large bowl; reserve shell. 2  Pour 2 cups juice into saucepan; bring to boil. Remove from heat. 3  Refrigerate 45 min. or until thickened, stirring every 15 min. Pour into watermelon shell.
For ânylonâ strings, manufacturers typically use polymers comprised of amide functional groups such as aliphatic polyamides (including Nylon 6 and Nylon 66), and polymers comprised of ketone functional groups such as Zyex (AKA polyetheretherketone, or PEEK).
Originally, violin strings were made of gut.In the 18th century, violinists began to use G strings wound with metal wire in order to improve their tone. Gradually, people began to use wound D and A strings too. Each violin string had a core of gut, and the E string was still usually all gut. This continued until the mid 20th century, when new developments in string making technology allowed the use of nylon core and steel strings.