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HydroCast is a sustainable, mineral-based casting compound designed to offer a greener alternative to traditional resins. With an easy 3:1 mix ratio, HydroCast combines a casting compound and an acrylic hardener to create a material that mimics the appearance of stone. This eco-friendly casting solution is ideal for a wide range of crafts and home decor projects, providing a versatile and environmentally conscious option for creators.
**If the mixture becomes too thick after sitting for too long, simply add more catalyst. Be sure to work quickly, as the material will begin to set if left unused for too long.**
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Fun & Easy to Use: Jump right in with a simple 3:1 mix ratio. (we make 3:1 easy because we provide you with the right scoops)
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Customizable: Mix in pigments or craft terrazzo chips for one-of-a-kind designs. Also paintable and sealable for that perfect finish.
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Functional Decor: Personalize and enhance your space.
- Natural Matte Finish: Capture every intricate detail and texture effortlessly.
Features
✅ Customizable with pigments or terrazzo; paintable & sealable.
✅ Sustainable, mineral-based compound.
🚫 Say Goodbye to long curing times.
🚫 No more high gloss finish.
FAQ
What is HydroCast?
🌟 HydroCast's 3:1 mix ratio provides a sustainable alternative to traditional resins. This mineral-based material effortlessly mimics stone's appearance, composed of a casting compound and acrylic hardener for simplicity and sustainability combined.
Does it provide a greener option without sacrificing quality?
🌱 Yes! Its sustainable formula offers a guilt-free crafting experience, ensuring your projects are not only stunning but also sustainable. Once cured, HydroCast becomes a solid material without emitting harmful substances, making it safe for indoor use due to its non-toxic nature.
Why should I choose HydroCast?
⭐ HydroCast is more robust and less prone to yellowing compared to resin. It's light weight nature, makes it perfect for weight-sensitive applications. Plus, its matte finish seamlessly complements any home decor.
Will my projects last?
🪨 Despite its substainable formula, HydroCast does not compromise on durability, ensuring that creations are long-lasting and resistant to wear and tear.
Can it be used to create terrazzo chips?
💥 HydroCast is great for making custom terrazzo chips in different colors. Mix colored HydroCast, break or cut it into small pieces, then add them into fresh HydroCast or other compatible materials to create terrazzo-style projects. It's easy to customize chip size, color, and placement.
Why Does my HydroCast appear spotty?
⭕ To prevent a spotty appearance, ensure thorough mixing of HydroCast. It's essential to blend the mixture well to eliminate lumps. Make sure HydroCast pigments are evenly dispersed throughout for a consistent finish.
Can I add acrylic paint to Hydrocast?
🎨 Feel free to experiment, but be mindful of the ratio. Adding excessive paint, especially water-based acrylics, can impede the curing process. You can achieve great results with acrylic paint, alcohol inks, and mica powders. However, HydroCast pigments offer richer colors compared to acrylics, even the higher-priced ones. Just one drop can make a significant color difference.
How long should I wait to sand my projects and what grit should I use? Can I wet sand?
⌛ Allow a full 24 hours before beginning the sanding process. Begin with a course grit, such as 180, and gradually progress to a fine grit, approximately 400, for a smooth finish.
How long should I wait between pouring layers?
🫗 We recommend pouring another layer In less than an hour, once the material reaches the 'tack-free' stage, it's best to proceed with the next layer. Waiting too long may require sanding first before pouring a new layer for proper adhesion. It's crucial to complete any layering within this timeframe.
Is it fire resistant and water proof?
🧯HydroCast is fire-resistant because of its mineral-based composition. With a suitable water-proof sealer, it can also become water-resistant, However, the level of water resistance depends on the sealer used. Adding a sealer doesn't significantly impact its fire resistance. Just make sure the sealer you choose is compatible with HydroCast to keep its fire-resistant qualities intact.
Need Help Getting Started?
Give us a call (269-488-4000) and our team of experts will assist you.
Need It Today?
Find us in store at your favorite local retailers! Be sure to check with your local store for product and stock options. Now available at:



Fall In Love With HydroCast
The naturally bright white hue of HydroCast ensures that every fine detail is replicated with stunning clarity. The matte finish enhances the aesthetic, while the quick demolding time enables efficient production without compromising quality.
HydroCast's versatility makes it the perfect sidekick for everything from jewelry, candle holders, planter pots, and home décor. Its ability to mimic the texture of stone means if you can dream it, you can pour it!
DIY Flower Pots !
Ready to put your HydroCast knowledge into action? Watch our latest video and learn how to create stunning, custom flower pots that will brighten up any room!
Mix & Pour – Prepare HydroCast (3:1 ratio) and pour into your mold. Tap to release bubbles.
2. Create Inlays – Pour HydroCast into small molds (stars, hearts, etc.). Let dry 30 minutes, then unmold.
3. Attach Inlays – Use Enviroset 5 Minute Epoxy Glue to secure inlays onto your pot.
4. Seal & Protect – Once the glue cures (about 5 minutes), apply a sealant on the pot.
5. Plant & Enjoy – Fill with soil, add flowers or herbs, and admire your handmade creation.
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