Craft flawless, frustration-free loops and jump rings with high-quality sprue mandrel rod formers. These precision-made tools ensure consistent sizing and eliminate guesswork, saving you time and materials. Available in various diameters to match your project needs, sprue mandrel rod formers are perfect for beginners and experienced jewelry makers alike. Invest in a set today and elevate your jewelry creations!

Jewelers use a sprue mandrel for various tasks. A sprue burning mandrel is specifically used to burn out a conical cavity in rubber molds when no sprue formers are available. This brass sprue former has a cone point designed to match the wax injector nozzle. The sprue tip may be heated to form the entry hole effectively. To use the sprue burning mandrel, simply heat it with a torch or burner and apply it to the mold.