HDPE Blocks

HDPE (High-Density Polyethylene) is a lightweight, impact-resistant thermoplastic that’s ideal for use in vacuum forming and press molding—especially for knife sheaths and firearm holsters.

At Index Thermoplastics, we supply precision-cut HDPE sheets engineered to handle repeated use, high heat, and the pressures of consistent forming cycles.

Why HDPE Is a Top Choice for Holster & Sheath Mold Making

• High Impact Resistance

  HDPE is tough and durable, making it perfect for forming molds that must endure clamping, vacuum suction, and mechanical pressure over time.

• Heat Formable and Dimensionally Stable

  With a stable melt point and low coefficient of friction, HDPE sheets can be easily machined and thermoformed to exact mold profiles without warping or excessive wear.

• Cost-Effective and Reusable

  HDPE mold blocks can be reused many times, making them a budget-friendly choice for both prototyping and production-scale forming of holsters or sheaths.

• Lightweight and Easy to Work With

  Compared to aluminum or other rigid mold materials, HDPE is much lighter, reducing fatigue and simplifying tool handling in the workshop.

Common Applications in the Sheath & Holster Industry

• Vacuum forming molds for Kydex® sheaths
• Press molds for concealed carry holsters
• Mold bases for thermoforming knives, tools, or tactical gear
• Jigs, fixtures, and templates for accessory production

HDPE Sheets from Index Thermoplastics

Index Thermoplastics offers HDPE sheets in multiple sizes and thicknesses, all optimized for mold-making applications in the holster and knife industry. Whether you’re an independent maker or a volume producer, our HDPE materials deliver the durability, ease of use, and consistency you need to streamline production.

Durable, formable, and built for makers—HDPE from Index Thermoplastics is the reliable mold base you’ve been looking for.