Jesmonite AC100 vs AC730: Understanding Their Differences and Best Uses

Jesmonite is a versatile and eco-friendly material known for its adaptability and performance. Two notable formulations are Jesmonite AC100 and AC730. Each has unique properties and applications, and understanding these differences will help you select the right material for your projects. Here's a comprehensive comparison between AC100 and AC730, including their handling and compatibility aspects.

What is Jesmonite AC100?

Jesmonite AC100 is a gypsum-based composite that is popular for its lightweight and user-friendly characteristics. Key features include:

• Gypsum-Based: AC100 is formulated with a gypsum base, providing a lightweight and workable material suitable for various decorative applications.
• Water Repellent, Not Waterproof: AC100 can be treated to be water repellent but is not fully waterproof. It is ideal for indoor applications or environments with limited moisture exposure.
• Quick Setting Time: AC100 typically needs about 20 minutes to set in the mold, allowing for faster turnaround on projects.
• Applications: It is well-suited for creating decorative items, intricate moldings, and lightweight architectural features. It’s also appropriate for making candle holders where minimal moisture exposure is expected.

What is Jesmonite AC730?

Jesmonite AC730 is a more advanced formulation that combines acrylic resin and cement to offer enhanced durability and performance. Its key features include:

• Acrylic Resin and Cement-Based: AC730 uses a combination of acrylic resin and cement, making it stronger and more durable compared to gypsum-based materials.
• Waterproof: AC730 can be made fully waterproof, making it ideal for outdoor applications and environments exposed to high moisture levels.
• Longer Setting Time: AC730 requires approximately 4 hours to set in the mold, allowing for detailed work but requiring a longer curing time.
• Applications: AC730 is perfect for structural elements, large-scale projects, and durable items like outdoor installations or candle holders that need to withstand varying environmental conditions.

Key Differences Between Jesmonite AC100 and AC730

1. Base Material:

   • AC100: Acrylic resin Gypsum-based.
   • AC730: Acrylic resin and cement-based.

2. Water Resistance:

   • AC100: Can be made water repellent but not waterproof. Best for indoor use or minimal moisture exposure.
   • AC730: Can be made fully waterproof, suitable for outdoor use and high moisture environments.

3. Setting Time:

   • AC100: Sets in approximately 20 minutes, allowing for quicker project completion.
   • AC730: Requires about 4 hours to set, making it more suited for projects where longer curing time is manageable.

4. Sealants and Additives:

   • Sealants: Each formulation has its own recommended sealant. Ensure you use the appropriate sealant for the specific Jesmonite type.
   • Retarder Compatibility: The retarder additives used to slow the setting time are not compatible between AC100 and AC730. Use the appropriate retarder for each formulation to achieve the desired working time.

5. Applications:

   • Both AC100 and AC730 can be used to create candle holders.  

Choosing the Right Jesmonite for Your Project

• Jesmonite AC100: Choose AC100 for indoor projects or decorative items that do not require waterproofing. Its quick setting time makes it ideal for projects where fast turnaround is needed.

• Jesmonite AC730: Opt for AC730 for projects that require high durability, waterproofing, and can accommodate a longer setting time. It’s well-suited for outdoor applications and structural elements.

Conclusion

Jesmonite AC100 and AC730 each offer distinct advantages, and selecting the right one depends on your specific project requirements. By understanding their properties, setting times, and compatibility considerations, you can choose the ideal material to bring your creative ideas to life, whether you’re working on indoor decorations or durable outdoor features.