Aluminum Single Mold Frames - 3/4" x 1-7/8" x 2-7/8"

These 3/4 inch thick aluminum mold frames are the industry standard for creating single-piece jewelry molds. The precision-machined internal dimensions of 1-7/8 by 2-7/8 inches provide a consistent volume for your mold rubber. Aluminum is chosen for its excellent heat conductivity, ensuring that the rubber cures evenly from the outside in. These frames are durable, lightweight, and designed to last for 1,000s of vulcanizing cycles without warping.