Crafting Eco-Friendly Maori Pendants from Recycled Plastic: A Step-by-Step Guide

Updated at: 10/05/2025

New Zealand's rich Māori heritage is renowned for its intricate and symbolic craftsmanship. Traditionally, pendants (hei tiki) and other adornments were carved from precious pounamu (greenstone) or bone, reflecting deep cultural significance and connection to the land. However, in the face of environmental challenges, we can explore innovative ways to honour this tradition while minimizing our impact on the planet. This guide presents a unique approach: crafting beautiful and meaningful Māori-inspired pendants from recycled plastic, allowing us to repurpose waste materials and create stunning, sustainable pieces.

This project blends ancient artistry with modern environmental consciousness, demonstrating that cultural expression and environmental responsibility can coexist harmoniously. Learn how to transform discarded plastic into captivating pendants that embody the spirit of Māori design. Let's dive into the step-by-step process to create your own eco-friendly hei tiki, bringing a touch of ancient artistry and modern sustainability into your life.

Preparation and Safety Guidelines

Tools Needed
  • 3D modeling software
  • Aluminum mold
  • Injection molding machine
  • Plastic shredder
  • Plastic-free cord
Safety Guidelines
  • Always use appropriate safety equipment, including gloves and eye protection, when working with sharp tools and heated materials. Molten plastic can cause serious burns.
  • Ensure adequate ventilation when melting plastic. Inhaling fumes from heated plastics can be harmful to your health.
  • Properly dispose of any excess plastic or waste materials according to local recycling guidelines. Avoid littering.

Step-by-Step Instructions

  1. Design and Mold Creation

    • Design and 3D model four favorite Maori designs.
    • Create a custom aluminum mold from the 3D models.
    Create a custom aluminum mold from the 3D models.
    Design and Mold Creation

  2. Plastic Preparation and Injection

    • Melt down, clean, and shred recycled plastic.
    • Inject the melted plastic into the aluminum mold using an injection molding machine.
    Inject the melted plastic into the aluminum mold using an injection molding machine.Inject the melted plastic into the aluminum mold using an injection molding machine.
    Plastic Preparation and Injection

  3. Pendant Demolding and Finishing

    • Demold the pendants after the plastic cools.
    • Trim excess plastic and re-shred it for future use.
    Trim excess plastic and re-shred it for future use.Trim excess plastic and re-shred it for future use.
    Pendant Demolding and Finishing

  4. Stringing and Packaging

    • String the pendants using plastic-free cord with sliding knots.
    • Package the pendants in custom hand-stamped packaging.
    Package the pendants in custom hand-stamped packaging.
    Stringing and Packaging

Read more: DIY Plastic Gallon Candy Basket: Upcycled & Adorable!

Tips

  • The aluminum mold acts as a heat sink, enabling immediate demolding.
  • Double-recycled plastic creates a unique marble black "Nebula" color.
  • Sliding knots allow for adjustable pendant length.
  • Thoroughly test the pendants for durability before selling (e.g., sea swimming).

Common Mistakes to Avoid

1. Uneven Heating of Plastic

Reason: Inconsistent heating leads to warping or uneven melting of the plastic, resulting in a misshapen pendant.
Solution: Ensure even heat distribution by using a heat gun with consistent airflow and moving it steadily across the plastic.

2. Improper Mold Release

Reason: The pendant may stick to the mold if it's not properly lubricated or the plastic isn't cooled sufficiently before removal.
Solution: Use a mold release agent like silicone spray and allow the plastic to cool completely in the mold before carefully removing the pendant.

FAQs

What types of plastic can I use to make these pendants?
High-density polyethylene (HDPE) and other rigid plastics work best. Look for plastics labeled #2. Avoid soft plastics or those with food residue. Ensure the plastic is thoroughly cleaned before use.
Is it difficult to carve the plastic? What tools do I need?
While harder than wood, it's manageable with the right tools. A rotary tool with various bits (including sanding drums) is ideal. Safety glasses and a dust mask are essential. Consider practicing on scrap plastic first.