Brass Cone Sprue Former & Rod - 2" L x 1/8" Dia.

This brass cone sprue former rod is a heavy-duty tool used to create the main feeder channel in your rubber or silicone molds. The solid brass construction ensures it remains perfectly straight and won't warp or degrade after 100s of uses in a hot vulcanizer. Its tapered cone shape creates a smooth, aerodynamic path for the wax, which significantly reduces the chance of air bubbles in your models. It is a fundamental piece of hardware for any jeweler who takes a "perfectionist" approach to their sprueing and gating.