Precision 3D Printed Star Insert for Vertical Resin Pen BlanksThe 3D Printed Star Insert is a precision accessory designed to create outstanding vertical resin pen blanks. This high-quality 3D printed piece fits directly into standard 3/4" PVC pipe, providing a stable centered channel that delivers consistent, professional results.The star-shaped centering element keeps your resin pours perfectly aligned. The result is clean layered effects, dramatic swirls, beautiful color separations, and eye-catching mica shifts that make your finished pen blanks truly stand out in any collection.Key Features of Our Vertical Casting Insert Precise 3/4" PVC Compatibility: Engineered to fit snugly inside Schedule 40 3/4" PVC pipe while maintaining excellent resin flow for vertical resin pen blanks. Durable Construction: Printed with premium, resin-resistant filament that holds up to repeated casting sessions and cleans up easily. Star Centering Design: Ensures perfect alignment during pressure pot vertical casting for even walls and high-quality blanks every time. Pressure Pot Rack Ready: Works seamlessly with our adjustable 2.5 gallon and 5 gallon pressure pot racks, creating a stable vertical casting setup that prevents tipping. Reusable & Production-Ready: Built tough for both hobby makers and serious production runs of vertical resin pen blanks. This Star Insert turns simple PVC pipe into an effective vertical casting tube. It solves the common problems of off-center pours, shifting inserts, and uneven results, helping you produce better, more consistent resin pen blanks with less waste.Casting Workflow for Vertical Resin Pen BlanksFollow this proven workflow to achieve professional results with your 3D printed star insert during pressure pot vertical casting. Compatible resins include Alumilite Clear and standard epoxies for smooth pours. Prep your 3/4" PVC mold by inserting the star insert at the base and securing it firmly. Mix your chosen resin with mica powders or pigments for desired color effects, then slowly pour down the centered channel. Place the assembly in your pressure pot rack and apply pressure to eliminate bubbles for flawless vertical resin pen blanks. Allow full cure time, then demold carefully and finish on the lathe for stunning results. Always release the insert with a light coat of mold release before each use to extend its life across multiple casting sessions.Project Pairings and CompatibilityDesigned specifically for use with our 2.5 Gallon Mold Rack System and 5 Gallon Mold Rack System. Ideal for single-color blanks, multi-stage pours, galaxy effects, and mica-shift patterns. Pair with Casting supplies, HDPE blank molds, Mica powders, paired with JB Royal Resin or Alumilite Clear for a complete vertical casting station. Makers also enjoy combining these inserts with other 3D printed inserts for varied textures in hybrid projects.Why Makers Love This ProductUsed by over 200 makers for reliable pressure pot vertical casting, this insert creates dramatic vertical pour effects that are hard to achieve with standard horizontal molds. It pairs perfectly with Stadium Pen Blanks racks and improves success rates on complex multi-color and layered blanks. Affordable and reusable, it is an essential upgrade that increases order value for your resin setup.Whether you’re just getting started with vertical resin pen blanks or looking to scale up your output, the 3D Printed Star Insert is an essential addition. Order multiples for dedicated color-specific setups and explore more options in our What's New collection.Pro tip: Combine with HDPE molds and mica powders for endless creative possibilities in your next pen turning project.
