Aqua Cast® eco resin is an environmentally friendly fusion of powder and polymer which only needs the addition of water to make beautiful homeware

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We have fused the acrylic polymer additives into one ground breaking powder to make this easy to use eco resin. All mechanical properties normally found in a traditional powder and polymer mixture remain the same, giving Aqua Cast excellent cured strength.

It couldn't be easier, simply add water, mix and pour.

The guide mix ratio is 100 : 35 (100 parts powder to 35 parts water, or 2.8 : 1)

The user can change the water addition to create a lower or higher viscosity (runnier or thicker) to suit the individual application. 

Aqua Cast product mass per kit size

Aqua Cast® 3kg powder (equates to 4.05kg usable material)
Aqua Cast® 10kg powder (equates to 13.5kg usable material)
Aqua Cast® 15kg powder (equates to 20.2kg usable material)
Aqua Cast® 25kg powder (equates to 33.8kg usable material)

Easily coloured with water based pigments such as our resi-TINT acrylic inks, acrylic paints or mica powders, e.g. resi-TINT MAX Neon Powder. 

  • Environmentally friendly eco resin
  • Perfect for coasters, ornamental vases, planters, candle holders, soap dishes and detailed figurines
  • Easily pigmented using resi-TINT inks or other water based pigments
  • Ideal for ceramics & textured art pieces and can be partnered with our art resins when using a mould
  • Excellent reproduction of detail
  • Can be used to create terrazzo pieces
  • High surface hardness and strength
  • Smooth, impact resistant surface
  • Fire protection class 1 (surface spread of flame)
  • High degree of weather resistance for external applications when sealed

FAQ's

  • Is Aqua Cast® weatherproof and waterproof?  No, it is porous when cured. To render the item water resistant (e.g for plant pots holding damp soil etc) we recommend our range of; hydroflow Sealers For external applications and those where the article will hold water ( vases etc ) it will need to be sealed with a clear resin (e.g MasterCast 1-2-1) to be fully watertight. 
  • How hard and durable is Aqua Cast® It is extremely tough and durable. Once cured Aqua Cast cures to a hardness of 208 MPa (Brinell) The compressive strength is 55 Mpa when mixed in the guide ratio of 100:35.
  • Will it fade with exposure to sunlight?  No this product is 100% UV stable.
  • Is it fire-resistant?  Yes, Aqua Cast does not self-ignite nor propagate flame. It is suitable for creating candle holders and fireplaces.
  • Can Aqua Cast® be used with art resin? Yes it can, an interesting mix of finishes can be achieved in one piece of art using Eli-Chem totalCAST art resin and Aqua Cast Eco Resin. Simply decide which medium to pour first and follow the guidelines for a second pour shown below. Both products are very easily coloured, the totalCAST can even have a clear or translucent finish. The limit to your creation is your imagination!

Customer review of Aqua Cast® water activated casting compound

Specifications

  Drying time    Demould in 60-90 minutes
  For maximum cured strength 24-48 hours
  Mix ratio   100 : 35 (2.8 : 1) e.g. 100g of powder to 35g of water 
  Pot Life   10-15 minutes @ 23°C
  Shelf life   Indefinite when kept dry in storage

 

Mixing

Adding colour
Use any water based pigment e.g. resi-TINT acrylic inks, acrylic paints or mica powders, e.g. resi-TINT MAX Neon Powder. 

Any solid can be added, sand, mica, quartzite, dried shards of Aqua Cast® etc.

Mixing the powder

The desired viscosity & consistency can be controlled to suit the application. Alterations to the guide powder to water ratio will affect the product performance, particularly in terms of drying time. Measure the desired amount of water, add the corresponding quantity of powder gradually during mixing. For example:

  • 100g powder to 35g/ml water
  • 150g powder to 52g/ml water
  • 200g powder to 70g/ml water
  • 300g powder to 105g/ml water
  • 500g powder to 175g/ml water

  • Use the handy online calculator tool on this page, all you need to know (or calculate) is the volume of your mould in grams or millilitres.

    Mix by hand or with an electric mixing blade for 2-4 minutes until uniform and smooth. Add pigments at the mixing stage to obtain the desired colour shade. The mixed solution will rapidly become creamy and lump free, tap the mixing container to help remove trapped air. 

    Application

    Immediately pour into your mould and allow to settle. Any residual bubbles can be popped by agitating or tapping the mould. Allow to harden for 60-90 minutes before demoulding (temperature and mix ratio dependent). Allow to dry for 24-48 hours to build cured strength.

    Pouring guidelines for mixing art resin and Aqua Cast®

    When pouring Aqua Cast® onto previously poured resin, please ensure the resin has entered the gel phase but is not yet touch dry to allow the Aqua Cast® to adhere. This will vary depending upon depth and size of the mould. If you think you have missed the gel window, wait for the resin to dry, and thoroughly abrade to create a key before pouring Aqua Cast®.

    When pouring resin onto Aqua Cast®


    Aqua Cast® Technical Data Sheet PDF

    Aqua Cast® Safety Data Sheet PDF

     

    EVELYN BROWN 12/02/2025

    Love this product, it's so easy to use and people are amazed at the gifts i've made for them. It's also more cost effective than others so now bout to order the Turbo

    Lisa Watson 21/10/2024

    My first time of working with eco resin and I have to say I absolutely love it! Aqua cast has been a dream to use, it has no trouble finding it's way into all the intricate details in my moulds, and leaves a lovely smooth, shiny surface that is virtually bubble free when de-moulding. I also love that, like when using epoxy resin, it's very good at picking up mica powder that's brushed directly onto the mould, allowing for plenty of design options. I highly recommend Aqua Cast, not just for the quality of the product but also for the very good value of it when compared to the other eco resins available on the market. Definitely no more buying of bubble riddled, lumpy plaster of paris for me!!

    Szilvia  Adebowale 31/07/2024

    I absolutely love working with this compound. The smoothness the way it turns out so amazing. Made beautiful vintage looking coasters using water based colour inks. Highly recommend. About to order again for the 4th time.

    Kayleigh Measor 04/05/2024

    I'm on my 4th round of aquacast and I absolutely love it. I use a mini whisk to mix it up and it works perfectly, the product is so smooth to work with and the finish is exceptional. I can't wait to try the new black.
    I've also spoken to Aram recently to get a better knowledge of the product and he was amazing. Emailed me all the details I needed and let me know that the black aquacast was live and would be back in stock again soon. As a small business I very much look to support others and Aram is definitely one I'll be sticking with.
    Hopefully I can try his biocast next - as eco friendly epoxy is definitely a game changer!

    Paul Lovell 26/04/2024

    Absolutely love the new Black Aqua cast it’s certainly a game changer.

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    Aqua Cast® Water Activated Casting Compound

    • Brand: Eli-Chem
    • Product Code: Aqua Cast 3kg, 10kg, 15kg, 25kg
    • Availability: 142
    • £24.00 Including VAT


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    Tags: Aqua Cast, AquaCast, eco resin, homeware, home decor, resin art, art structure medium, art texture medium, gypsum, plaster, Aqua-Cast, Aquaflow, res20, eco one, eco-one, eco pour