Resin Casting Powder NZ – Fast-Drying Casting Powder for Silicone Moulds

Create detailed, durable castings with Northland Resin Art Resin Casting Powder, a water-based casting powder designed for creative moulding, craft and casting projects.

This high-hardness, quick-drying casting powder is activated with water and is ideal for use with suitable silicone moulds and decorative casting moulds. Whether you're making ornaments, figurines, sculptures, decorative pieces or creative mould projects, this versatile casting material gives you an easy way to create your own custom castings.

Available in 500g, 1kg and 2kg sizes, you can choose the amount that suits your project — whether you're experimenting with a new mould or regularly creating multiple castings.

Why Choose Northland Resin Art Casting Powder?

• Water-based casting powder
• High hardness
• Quick drying
• 3:1 powder-to-water ratio by weight
• Approximately 10-minute working time
• 30–60 minute demould time
• Approximately 2-hour full cure
• Designed for casting and mould projects
• Suitable for use with appropriate silicone moulds
• Available in 500g, 1kg and 2kg
• Great for artists, crafters and DIY makers
• Available in New Zealand from Northland Resin Art

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Casting Powder Specifications

Working and curing times can vary depending on temperature, humidity, casting size and project conditions.

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How to Mix Resin Casting Powder

For consistent results, accurately measure both the casting powder and water by weight.

1. Measure the powder

Place your container on accurate digital scales and measure the required quantity of casting powder.

2. Add water

Use the 3:1 powder-to-water ratio by weight.

For example:

300g casting powder + 100g water

3. Mix thoroughly

Mix the powder and water until you have a smooth, consistent casting mixture.

Avoid introducing excessive air while mixing.

4. Pour into your mould

Slowly pour the mixture into your suitable silicone mould.

Gently tap or vibrate the mould if necessary to help release trapped air.

5. Allow to set

The working time is approximately 10 minutes, so prepare your mould and tools before mixing.

6. Demould

Depending on the casting and conditions, your piece can generally be removed from the mould after approximately 30–60 minutes.

7. Allow to cure fully

Allow approximately 2 hours for full cure before carrying out further finishing or decoration.

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What Can You Make With Casting Powder?

Resin Casting Powder is an excellent choice for a wide range of creative projects.

Use it for:

• Decorative ornaments
• Figurines
• Sculptures
• Miniatures
• Home décor
• Craft decorations
• Decorative tiles
• Moulded art pieces
• Small casting projects
• Silicone mould projects
• DIY craft projects
• Creative casting
• Resin-art related mould projects

Once fully cured, your casting can be painted, sanded, decorated or finished according to your project requirements.

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500g, 1kg or 2kg – Which Size Should I Choose?

500g Casting Powder

A convenient size for beginners, small projects and trying out new silicone moulds.

1kg Casting Powder

A great all-round option for regular makers and multiple casting projects.

2kg Casting Powder

Ideal for artists, crafters and makers who use casting powder regularly or have multiple moulds to fill.

Casting Powder for Silicone Moulds

Silicone moulds are ideal for creating detailed shapes and decorative castings. Northland Resin Art has a growing range of silicone moulds for resin art and crafts, including animal, geometric, coaster, pendant, decorative and other creative mould designs.

Shop: Silicone , Resin Moulds, Silicone Mixing sticks, Digital scales, Measuring Cups, Mica Powders,

Casting Powder vs Epoxy Resin

Casting powder and epoxy resin are different casting materials and are suited to different types of projects.

Casting powder is mixed with water and produces a hard, solid casting after curing. It is particularly useful for decorative moulds, figurines, ornaments and craft projects.

Epoxy resin is a liquid two-part resin system that cures into a resin material and is commonly used for resin art, jewellery, coasters, river tables and other applications.

If you're looking for epoxy resin for resin art, Northland Resin Art also offers a range of epoxy resin products.

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Why Buy Casting Powder from Northland Resin Art NZ?

At Northland Resin Art, we're building a specialist range of resin, casting materials, silicone moulds, pigments and creative supplies for New Zealand artists and makers.

Our goal is to make it easier for Kiwi creators to find the materials they need for their next project in one place.

Whether you're a beginner making your first moulded decoration or an experienced artist producing multiple castings, our Resin Casting Powder NZ is a versatile addition to your creative supplies.

Choose 500g, 1kg or 2kg and start creating.

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❓ Frequently Asked Questions

What is resin casting powder?

Resin casting powder is a water-based casting material that is mixed with water to create a hard casting suitable for moulding and creative projects.

What is the mixing ratio?

The recommended ratio is 3 parts casting powder to 1 part water by weight.

How long does casting powder take to set?

The product has an approximate 10-minute working time and can generally be demoulded after approximately 30–60 minutes, depending on conditions and the size of the casting.

How long does casting powder take to cure fully?

The approximate full cure time is 2 hours.

Can I use casting powder in silicone moulds?

Yes. The product is suitable for use with appropriate silicone moulds and other suitable casting moulds.

What sizes are available?

Northland Resin Art Casting Powder is available in 500g, 1kg and 2kg options.

Can casting powder be painted?

Once the casting has fully cured, it can be sanded, painted and decorated for suitable projects.

Is the powder mixed by weight or volume?

The 3:1 powder-to-water ratio is measured by weight, so accurate digital scales are recommended.