Cardcast | Hexagon Press Mold for Cardboard Vases | Paper Casting

This project shows how to create geometric cardboard vases using a reusable 3D printed mold.
The mold consists of two mirrored halves that form a clean hexagonal shape with faceted sides.

Instead of printing a full vase, the mold allows you to create lightweight, eco-friendly vases from recycled paper or cardboard pulp.

1. Printing the Mold

• Print both mold halves

• Print the Press

• No supports required

• 0.2 mm layer height recommended

• 3–4 perimeters for strength

• 120% infill !!!! must be strong

• PLA works perfectly, PETG recommended 

The mold is symmetrical and can be aligned using tape or clamps during pressing.

2. Preparing the Paper Pulp

There are two methods:

Method A – Wet Newspaper Technique (as shown in images)

1. Soak newspaper in water.

2. Tear into small pieces.

3. Slightly squeeze out excess water.

4. Press the wet paper into the mold cavity.

Method B – Paper Pulp

1. Blend soaked paper with water.

2. Remove excess water.

3. Press the pulp firmly into the mold.

3. Pressing & Drying

• Fill both halves evenly.

• Close the mold.

• Secure with tape or clamps.

• Let dry 24–48h (depending on weather).

• Remove carefully once fully dry.

For faster drying:

• Place in a warm room.

• Use airflow (not direct heat).

3. Finishing

• Optional: seal with clear coat or acrylic varnish for water resistance.

• You can insert a glass container inside for fresh flowers.

Quick Facts

• Sustainable material use

• Lightweight final object

• Geometric modern aesthetic

• Perfect for DIY / art projects

Important Note

Cardboard vases are not waterproof by default.
Always use:

• A glass insert
  or

• Proper sealing if using real flowers.

🎨 Customization Ideas

• Scale the model for larger/smaller vases

• Use colored paper

• Paint after drying

• Try textured outer surfaces