Custom Dice Molding & Casting: Complete Guide

Making your own custom dice is a popular hobby among tabletop gamers and collectors. This guide covers everything you need to know, from choosing materials and tools, to creating molds, casting resin dice, and adding finishing touches.

Materials Needed

Materials Tools
Resin Mold release spray
Silicone mold putty Mixing cups and sticks
Dice masters (optional) Sandpaper
Inks or pigments Paintbrushes
Glitter or decorations Protective gear (gloves, mask)

Key Steps

  1. Mold Making

    • Prepare the dice master
    • Mix and pour silicone putty
    • Allow mold to cure
  2. Resin Casting

    • Mix resin with colorants/decorations
    • Pour into mold
    • Let resin cure fully
  3. Finishing Touches

    • Sand and polish dice
    • Paint or decorate as desired

With these simple steps, you can create unique, personalized dice for your gaming sessions or collection. Experiment with different materials and designs to make your dice truly one-of-a-kind!

Materials and Tools

To start making your own custom dice, you'll need some basic materials and tools. Here's what you'll need:


Material What It's For
Resin The main material for casting your dice
Silicone mold putty For creating molds to shape your dice
Dice masters (optional) Pre-made dice shapes to use as a base for your molds
Inks or pigments To add color to your resin dice
Glitter or decorations To add extra flair to your dice


Tool What It's For
Mold release spray Helps remove the cured resin from the mold
Mixing cups and sticks For mixing the resin components
Sandpaper For smoothing and polishing the finished dice
Paintbrushes For applying inks, pigments, or decorations
Protective gear (gloves, mask) Safety first when working with resin

Make sure to follow all safety instructions and guidelines when using these materials and tools. With the right supplies, you'll be ready to start creating your own unique dice.

Creating Molds

Making molds is a key step in custom dice making. This section covers the process of creating molds for dice, including mold types, using dice masters, and step-by-step instructions.

Using Dice Masters

A dice master is a pre-made dice shape used as a base for creating molds. You can:

When choosing a dice master, consider:

Mold Types

Different silicone molds have pros and cons:

Mold Type Pros Cons
Sprue Molds Easy to make, low cost Limited to simple shapes, air bubbles
Cap Molds Good for complex shapes, easy to demold Uses more material, higher cost
Hybrid Molds Combines sprue and cap mold benefits More complex to make, higher cost

Making the Mold

Follow these steps to create a silicone mold:

  1. Prepare the master: Clean and dry the dice master.
  2. Mix the silicone: Follow instructions to mix the silicone rubber and hardener.
  3. Pour the silicone: Pour the mixed silicone into the mold box, covering the dice master.
  4. Let it cure: Allow the silicone to cure for the recommended time, usually several hours or overnight.
  5. Demold and clean: Remove the mold from the box and clean it thoroughly.

Casting Resin Dice

Casting resin dice is a key step in making custom dice. This process involves choosing the right resin, adding color and effects, and carefully pouring the mixture into the mold.

Choosing Resins

Picking the right resin is crucial. Not all resins work well for dice casting. When choosing a resin, consider:

Popular resins for dice casting include epoxy, polyurethane, and UV resin. Research to find the best resin for your needs.

Adding Color and Effects

Adding color and visual effects can make your dice unique. Here are some techniques:

Follow the manufacturer's instructions and safety precautions when adding color or effects.

Casting Process

The casting process involves pouring the resin mixture into the mold and letting it cure. Here's an outline:

Step Description
1 Clean and dry the mold thoroughly.
2 Mix the resin and hardener according to instructions.
3 Add color or effects to the resin mixture, if desired.
4 Pour the mixture into the mold, filling it to the top.
5 Let the resin cure for the recommended time, usually several hours or overnight.
6 Remove the dice from the mold and clean them.

Finishing Dice

Finishing your custom dice is an important final step. This process involves removing the dice from the mold, cleaning them, smoothing the surfaces, and adding any desired details or designs.

Removing and Cleaning

1. Remove from Mold

Gently twist the dice to release them from the mold. Be careful not to damage the dice or the mold.

2. Clean the Dice

Use soap and water to thoroughly clean the dice, removing any residue or mold release agents. Dry the dice with a soft cloth to prevent water spots.

Sanding and Polishing

Step Action
1 Start with coarse sandpaper (800-1000 grit) and sand the dice to smooth the surfaces.
2 Progress to finer sandpaper grits (1500-2000) for a smoother finish.
3 Apply a polishing compound and buff the dice with a cotton cloth or microfiber cloth.
4 Buff in circular motions and wipe off any excess compound with a clean cloth.

This sanding and polishing process will give your dice a high-gloss, professional finish.

Adding Details

To add numbers, symbols, or designs to your dice:

Work carefully and patiently to achieve the desired details on your custom dice.

Troubleshooting and Advanced Techniques

Dealing with Air Bubbles

Air bubbles can be a nuisance when casting resin dice. To minimize them:

Removing Dice from Molds

Removing cured dice from molds can be tricky. To avoid damage:

Ensuring Fair and Balanced Dice

It's crucial to ensure your custom dice are fair and balanced. To test:

  1. Roll the dice multiple times and record the results.
  2. If the results are skewed, adjust the weight distribution or re-cast the dice.

Creating Unique Dice

To make truly unique and visually stunning custom dice, try these advanced techniques:

Technique Description
Resin Colors and Effects Use different resin colors, glitter, or glow-in-the-dark effects.
Intricate Designs Add designs or patterns using paint or inks.
Custom Mold Shapes Create molds with complex shapes or designs.
Incorporating Materials Embed metal, wood, or other materials into the dice design.


You've reached the end of this comprehensive guide on making custom dice through molding and casting. By now, you should have a clear understanding of the materials, tools, and techniques needed to create your own unique dice.

Don't be afraid to try new things and push the boundaries. The world of custom dice making is all about experimentation. With practice and patience, you can craft stunning dice that reflect your style.

If you need further inspiration or resources, check out online communities and forums dedicated to custom dice making. Many talented dice makers share their work and offer tips on social media platforms.

Most importantly, have fun with the process of creating something truly personalized. Happy crafting!

Tips for Custom Dice Making
- Experiment with different materials and techniques
- Join online communities for inspiration and advice
- Don't be afraid to try new things
- Focus on creating personalized, unique designs
- Most importantly, enjoy the creative process!


What is the best resin for making dice?

The top choice for dice makers is the Resin Obsession super clear epoxy resin. This resin cures to a hard, glass-like finish, ensuring your dice won't soften or dent with regular use.

What type of resin should I use for dice?

Epoxy resin is the recommended material for making dice. It's a two-part resin that hardens over time. UV resin, which cures under UV light, is another option. Check out YouTube for techniques on mixing colors and adding unique elements to resin.

Important Safety Note
When working with resin, always follow safety guidelines and wear protective gear like gloves and a mask to avoid potential health risks.