Casting Molds
High-quality HDPE and silicone molds and the iconic Underhill Casting system.
The mold you cast in dictates the size and shape of the blank you get out. We stock silicone molds and complete mold systems sized for the most popular pen kit blank dimensions — slimline, Sierra, Jr II, kitless rod stock, and several custom shapes for specialty pours. Silicone molds are reusable for dozens of pours when treated right (mold release helps), and a quality mold can be the difference between a clean blank and one that needs hours of squaring and trimming. Pair with our casting resins, mica powders, and pressure pot equipment to build a complete blank-casting setup.