High-Strength Plaster of Paris DIY Casting Gypsum Powder
Model: 7 Series Mix Ratio: 100:30
Key Features:
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High-Strength Alpha Grade: Marble-like, durable, and non-chalky finish.
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Rapid Curing & Toughness: Fast demolding without cracking or chipping.
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100% Eco-Friendly Casting: Non-toxic, natural, and safe for all crafting levels.
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Vivid Color Mixing: Optimized for vibrant pigments and marble effects.
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Fluid & Minimal Bubbles: High flow for capturing ultra-fine mold details.
Technical Specifications:
| ☆ Mixing Ratio: 100g Powder:30g Water | ☆ Setting Time: 8-12 Min Initial Set |
| ☆ Demolding Time: 20-30 Min Demolding | ☆ Safety Standard: EN71-3 & MSDS Certified |
Perfect For:
| ☆ Aroma Stones Powder | ☆ Candle Jar Material |
| ☆ Home Decor | ☆ Jewelry Tray DIY |
| ☆ Terrazzo Art | ☆ Professional Models |
- Overview
- Recommended Products
- Superior Strength & Hardness: Once fully cured, our plaster achieves a compressive strength comparable to high-end architectural materials. This ensures your trays, pots, and statues are resistant to chipping and cracking.
- Porcelain-Like Smoothness: Processed through an ultra-fine mesh, the powder delivers a surface so smooth it feels like polished ceramic. This minimizes the need for tedious sanding and finishing.
- Zero-Shrinkage Precision: Engineered for high-precision DIY Casting, our powder maintains its exact dimensions during the curing process, ensuring a perfect fit for complex silicone molds.
- Eco-Friendly & Skin Safe: 100% non-toxic, odorless, and solvent-free. It is a safe and sustainable Jesmonite alternative for home studios and professional workshops alike.
- Minimalist Home Decor: Create stunning Nordic-style Candle Jars, Jewelry Trays, Coasters, and Abstract Sculptures.
- Aroma Stones: Due to its refined porosity, our gypsum is the ideal carrier for essential oils. Craft beautiful Aroma Stones that slowly release fragrance into the air.
- Marble & Terrazzo Effects: Our pure white base is optimized for Pigment Integration. Add JH Color Essences to create swirling marble patterns or mix in stone chips for a luxury Terrazzo look.
- Functional Prototyping: Designers and architects trust our Gypsum Powder for creating high-detail mockups and functional models that require structural stability.
- Nordic Minimalist Home Decor Transform your living space with handcrafted Coasters, Trinket Trays, and Bookends. Our High-Strength Plaster provides a porcelain-smooth surface that complements any modern interior design.
- Artisanal Aroma Stones Create professional-grade Aroma Stones for cars and closets. The refined porosity of our Gypsum Powder allows for optimal absorption and slow release of essential oils and fragrances.
- Luxury Candle Container Manufacturing A favorite among candle makers! This Fire-Resistant Plaster of Paris is the perfect material for custom, heat-stable candle jars that offer a premium, weighted feel compared to glass or tin.
- Terrazzo & Marble Art Projects Unlock your creativity by mixing stone chips or swirling multiple colors. The high fluidity of the mix ensures even distribution of aggregates for stunning Terrazzo-style crafts.
Introduction: The Professional Choice for Sustainable DIY Art
Elevate your creative projects with JH EPOXY’s High-Strength Plaster of Paris DIY Casting Gypsum Powder. In the modern era of artisanal home decor, the difference between a hobbyist piece and a professional masterpiece lies in the quality of the base material. Our High-Strength Gypsum Powder is specifically engineered for creators who demand a marble-like finish, exceptional durability, and eco-friendly performance. Whether you are building a boutique candle brand or crafting intricate interior accents, this Alpha-grade Plaster of Paris provides the flawless foundation your art deserves.

Why Choose JIANGHE High-Strength Gypsum Powder?
Not all casting powders are created equal. Standard craft plasters often result in "chalky" surfaces, visible pinholes, and fragile edges. Our DIY Casting Gypsum Powder utilizes an advanced Alpha-stone formula that sets a new industry standard:


Endless Creative Possibilities
The versatility of our High-Strength Plaster of Paris allows you to explore the hottest trends in home decor:
Detailed Technical Specifications
| Product Name | Professional Alpha Gypsum Powder |
| Ingredients | Calcium Sulfate |
| Material Grade | High-Purity Alpha Gypsum |
| Mixing Ratio | 100g Powder : 30g Water |
| Initial Setting Time | 8 - 12 Minutes |
| Full Curing Time | 20 - 30 Minutes (Depending on mold size) |
| Whiteness Rating | ≥ 95% |
| Certifications | MSDS, REACH, RoHS, CPSIA Compliant |
| Shelf Life | 12 Months (Stored in a dry environment) |
| Storage Temperature | 15°C to 25°C |
How to Achieve the Perfect Pour (Step-by-Step)
Follow these expert steps for consistent, professional results with our DIY Casting Powder:
1. Prepare Your Tools: Ensure your silicone molds are clean and dry. Use a digital scale for precise weight measurements.
2. The Golden Mix: We recommend a ratio of 100g powder to 30g water. For more complex molds with fine details, you can increase the water to 35 parts for higher fluidity.
3. Sift & Soak: Always add the powder to the water. Sift the powder slowly into the water to avoid clumping. Let it soak for 30–60 seconds to allow the particles to fully hydrate.
4. Slow Stirring: Stir gently in a circular motion to avoid introducing air bubbles. If you are adding liquid pigments, do so now and mix until the color is uniform.
5. Pour & Tap: Pour the mixture into the mold from a low height. Gently tap or vibrate the mold to help any remaining micro-bubbles rise to the surface.
6. Demolding: The plaster will undergo a slight exothermic reaction (it will feel warm). Wait until it cools down completely before removing it from the mold.

Applications & Project Gallery

Precautions & Professional Tips
1. Water-First Mixing Rule: Always sift the Gypsum Powder into the water. Adding water to the powder can lead to clumps and uneven curing.
2. Precision Measurement: Use a digital scale for the 100:30 (Powder:Water) ratio. Even a small deviation can affect the final hardness and setting time of your Plaster of Paris.
3. Prevent Clogging: Never pour excess gypsum slurry down the drain, as it will harden underwater and clog pipes. Allow leftovers to cure in a cup and dispose of them as solid waste.
4. Inhalation Safety: While our powder is Non-toxic, we recommend wearing a dust mask during the mixing phase to avoid inhaling fine particles, especially in large-scale production.
5. Moisture-Free Storage: Keep the bag tightly sealed in a cool, dry place. Gypsum Powder is highly hygroscopic; exposure to humidity will reduce its shelf life and affect its setting properties.
Factory Direct: B2B Wholesale & Global OEM Support
As a leading New Material Technology factory, JH EPOXY supports your business growth from startup to scale:
1. Bulk Wholesale: We offer 25kg industrial sacks and 1-ton pallets for large-scale manufacturers and distributors.
2. Private Labeling (OEM): We can provide white-label packaging with your brand’s logo and custom instruction manuals.
3. Quality Guarantee: Every batch of our Gypsum Powder undergoes rigorous QC testing for strength, whiteness, and setting time consistency.
4. Global Export: Our Gypsum Powder is palletized and moisture-proofed for long-distance international shipping, ensuring it arrives in perfect condition at any global port.
FAQ:
Q1: How long does it take to cure and demold?
Our High-Strength Plaster of Paris features a rapid-setting formula. It has an initial set time of 8-12 minutes. For most DIY Casting projects, you can safely demold within 20-30 minutes. Full structural strength is achieved after the moisture has completely evaporated (24-48 hours).
Q2: Can I mix this Gypsum Powder with colorants?
Absolutely. This Alpha-grade Gypsum Powder is designed with a pure white base, making it perfect for Vivid Pigment Mixing. It is fully compatible with our Liquid Color Essences, allowing you to create solid colors, pastels, or trendy marble and terrazzo effects.
Q3: Is this Gypsum Powder strong enough for functional items like candle jars or flower pots?
Yes. Our Gypsum Powder (calcium sulfate) cures to a hardness noticeably better than standard plaster powders, resisting dusting and edge chipping under normal use. It works well for dry-use functional items such as candle jars, incense holders, small flower pots (an inner waterproof cup is recommended), pen holders, storage trays, and desk organizers. Please note that this material is not designed for heavy impact, load-bearing structures, or long-term water exposure, but for everyday home DIY and décor use it performs reliably.
Q4: Is the material safe for indoor use and kids?
Safety is our priority. JH EPOXY Gypsum Powder is 100% Non-toxic, odorless, and solvent-free. It complies with EN71-3 safety standards, making it a safe Eco-friendly Casting Material for professional studios, home DIY, and educational workshops.
Q5: How do I achieve a bubble-free finish?
To get a Smooth Marble-like Finish, always add the powder to the water (not vice-versa). Stir slowly in one direction to avoid trapping air. Tapping the silicone mold gently after pouring will help any remaining micro-bubbles rise to the surface.