For anyone serious about mold making, choosing the best platinum cure silicone is essential for achieving durable, flexible, and high-quality molds. The top pick in this roundup is the BBDINO Shore 15A Platinum Silicone Mold Making Starter Kit for its excellent balance of flexibility and ease of use. The Let’s Resin Silicone Mold Making Kit 70.5oz stands out for its extra softness and elasticity, making it ideal for intricate designs. However, tradeoffs in cost, hardness, and application suitability can complicate the decision. Continue reading for a full breakdown of these options and how to pick the best silicone for your needs.
Key Takeaways
- High flexibility and softness, like the Let’s Resin Kit, are perfect for detailed, delicate molds but often come at a higher price.
- Harder silicones, such as the BBDINO 40A, offer more durability but require more precise handling and may be less forgiving for beginners.
- Food-safe formulations, like the Platinum Cure 15A, are essential for edible or skin-contact molds, but they might be more expensive and harder to work with.
- Ease of mixing and curing time significantly impact workflow efficiency; kits with 1:1 ratios and bubble-free curing are generally preferable.
- Brand reputation and kit completeness matter — comprehensive kits with accessories tend to provide better value and ease of use.
More Details on Our Top Picks
Let’s Resin Silicone Mold Making Kit 70.5oz – Extra Soft & Elastic Liquid Silicone for Mold Making
This kit stands out for its ultra-soft, 0A hardness silicone, making it ideal for creating highly detailed, flexible molds. Compared with the higher hardness BBDINO 40A Kit, it offers greater elasticity, perfect for intricate shapes and thin-walled molds. However, this flexibility comes at a cost: finished molds may feel oily and require extended curing time to fully set. It’s best suited for crafters who prioritize fine detail and flexibility over maximum support for heavy-duty molds.
Pros:- Highly flexible and elastic for detailed reproductions
- Easy to mix and quick to cure, with no vacuum required
- Suitable for a variety of casting materials
Cons:- Finished molds may feel oily and need extended curing
- Bubble formation can occur in hot environments
- Cure time may need adjustment for best results
Best for: Beginners and hobbyists making detailed, flexible molds for resin, soap, or candles.
Not ideal for: Those needing rigid, durable molds for heavy materials like concrete or plaster should avoid this, as its softness may compromise support.
- Total Volume:70.5 oz
- Hardness:0A (extra soft)
- Mix Ratio:1:1 by weight
- Cure Time:3-6 hours at room temperature
- Includes:2 bottles of 1kg silicone, mixing cups, sticks, gloves
Bottom line: This pick makes the most sense for hobbyists seeking flexible, detailed molds without heavy-duty support needs.
BBDINO Shore 15A Platinum Silicone Mold Making Starter Kit
This kit offers a fast 3-hour cure time, making it ideal for projects that demand quick turnaround. Its Shore 15A silicone provides excellent flexibility, suitable for detailed molds of small to medium-sized objects. Compared with the 40A high-hardness option, this silicone is notably softer, which helps capture fine details but limits support for larger, heavy items. The inclusion of all necessary tools streamlines the process, especially for beginners or those needing rapid results.
Pros:- Fast cure time of 3 hours enhances productivity
- Complete kit with tools simplifies starting out
- High flexibility captures intricate details
- Non-toxic and skin-safe for versatile applications
Cons:- Limited to medium-sized molds due to silicone properties
- Requires careful mixing to avoid imperfections
Best for: Craftspeople creating detailed, flexible molds for small to medium objects like soaps, candles, or art pieces.
Not ideal for: Large or heavy molds requiring high support should avoid this softer silicone, as it may deform under weight.
- Shore Hardness:15A
- Cure Time:3-5 hours
- Pot Life:30 minutes
- Mix Ratio:1:1
- Weight:38.8 oz
- Application:Molds for soap, candles, crafts
Bottom line: This kit suits users who need quick, flexible molds with excellent detail at a smaller scale.
BBDINO Silicone Mold Making Kit 40A High Hardness Liquid Platinum Silicone for Molds and Casting, 2.42 Lbs
This silicone’s higher Shore 40A hardness makes it well-suited for creating sturdy molds that support heavy casting materials like concrete or plaster. Compared with the more flexible 15A silicone, it offers less flexibility but greater support, which is essential for larger or weight-bearing molds. The quick 3-hour cure time and straightforward 1:1 mixing ratio make it accessible to beginners, though degassing is recommended to avoid bubbles. Its durability and safety for food contact expand its versatility in both craft and functional mold projects.
Pros:- Supports large and heavy molds effectively
- Quick curing time of 3 hours with simple mixing
- Food-safe, odorless, and non-toxic
- Long shelf life and easy storage
Cons:- Requires degassing to prevent bubbles
- Less flexible, may not capture fine details as well as softer silicones
Best for: Users making large, durable molds for concrete, plaster, or artificial stone that require support and rigidity.
Not ideal for: Fine detail work or small, intricate molds may suffer from reduced flexibility with this higher hardness silicone.
- Shore Hardness:40A
- Cure Time:3 hours
- Working Time:30 minutes
- Mix Ratio:1:1
- Weight:2.42 lbs
- Safety:Food contact safe, odorless, non-toxic
Bottom line: Ideal for creators needing robust, large molds that can withstand heavy casting materials, despite less flexibility.
16oz Platinum Cure Silicone Mold Making Kit for Beginners – 1:1 Easy Mix, Bubble-Free, Food-Safe Silicone Rubber for Resin, Soap, Candle & DIY Casting
This kit stands out for its simplicity, featuring a 1:1 mix ratio that simplifies the process for those new to mold making. Compared with more advanced options like the BBDINO Sapphire Blue kit, it offers a lower volume and is more suited for small projects, but it excels at capturing fine details with minimal bubbles. Its low-viscosity formula ensures easy pouring, while the flexibility and durability support multiple uses. However, proper curing is essential to guarantee food safety, and its small volume limits larger projects. Overall, this pick makes the most sense for hobbyists or crafters just starting out, seeking an accessible, safe, and detailed mold material.
Pros:- Simple 1:1 mix ratio ideal for newcomers
- Captures fine details with minimal bubbles
- Flexible and tear-resistant for multiple uses
- Food-safe after curing
Cons:- Limited to small-scale projects due to volume
- Requires careful curing to ensure food safety
Best for: Beginners or hobbyists seeking an easy, safe, and detailed mold-making solution.
Not ideal for: Professional mold makers or those needing large-volume supplies for commercial projects.
- Volume:16 oz
- Mix Ratio:1:1
- Type:Platinum cure silicone
- Viscosity:Low
- Food Safe:Yes (after full cure)
Bottom line: This kit is perfect for beginners focused on small, detailed molds and safe food applications.
Platinum Cure Mold Making Silicone 15A, 66oz, Food-Safe Flexible Liquid Rubber for Resin Casting & Crafts
Compared to the beginner-focused 16oz kit, this 66oz silicone offers greater volume and a softer 15A hardness, making it more suitable for detailed, flexible molds in professional or intensive hobbyist projects. Its low viscosity ensures precise pouring into complex shapes, and the strong tear resistance enhances durability. While its larger size is advantageous, it demands meticulous mixing to avoid weak spots or curing issues, and the softness might be overkill for rigid mold needs. This option is ideal for creators who need high flexibility and detailed captures in food, jewelry, or protective molds, but less so for those seeking a firmer, structural silicone.
Pros:- Food-safe and suitable for delicate food molds
- Flexible with excellent demolding properties
- Excellent for complex and detailed shapes
- Stable curing with high tear resistance
Cons:- Requires precise mixing for optimal results
- Hardness of 15A may be too soft for some applications
Best for: Producers or hobbyists creating flexible, detailed molds for food, jewelry, or protective applications.
Not ideal for: Users needing rigid molds or small-volume projects with quick turnaround times.
- Type:Platinum Cure Silicone
- Hardness:15A
- Volume:66 oz
- Mixing Ratio:1:1
- Food Safe:Yes
- Viscosity:Low
Bottom line: This silicone excels for users needing highly flexible, detailed molds with larger volume capacity.
BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds, Sapphire Blue, 4.4 lbs, 1:1 by Volume
This 4.4-pound kit provides a substantial amount of silicone, making it ideal for those needing multiple or larger molds. Its low viscosity and self-degassing properties simplify mixing, and the long working time of 30 minutes supports complex projects. Compared with smaller kits like the 8oz Let’s Resin Trial Kit, it offers higher durability and support for repeated casting, including resin, jewelry, or concrete. However, the longer cure time of about 5 hours can slow down workflows, and careful mixing is essential to avoid defects. Its vibrant sapphire blue color helps in visual inspection, but color options are limited. This choice is best for hobbyists or small studios focused on durability and volume.
Pros:- High durability supports hundreds of uses
- Easy to mix with low viscosity and self-degassing
- Supports a variety of casting materials
- Large volume ideal for multiple molds
Cons:- Curing time may slow production pace
- Requires careful mixing to prevent curing issues
Best for: Hobbyists or small studios needing durable, high-volume molds for resin, jewelry, or concrete projects.
Not ideal for: Quick-turnaround projects or those preferring a fast cure silicone for small molds.
- Weight:4.4 lbs
- Mix Ratio:1:1 by volume
- Cure Time:Approximately 5 hours
- Working Time:30 minutes
- Color:Sapphire Blue
- Application:Resin, jewelry, candle, concrete casting
Bottom line: This heavy-duty silicone kit suits those needing large-volume, durable molds for long-term projects.
Let’s Resin 8oz Silicone Mold Making Trial Kit – Fast Cure, Flexible Platinum Cured Silicone Rubber for Casting and Molds
This 8oz kit is tailored for quick, small molds, offering a fast cure between 3-6 hours and high flexibility. It stands out against larger or more complex products like the BBDINO Sapphire Blue kit because it’s designed for rapid turnaround and ease of use. Its translucent appearance and simple 1:1 ratio make it accessible for beginners, while the fast curing time suits small batch production or prototyping. However, its limited volume restricts larger molds, and it’s not suitable for making squishies or highly elastic items. This is an ideal choice for hobbyists or educators needing quick, detailed molds without extensive setup time.
Pros:- Fast curing in 3-6 hours at room temperature
- High flexibility and tear resistance
- Complete starter kit with tools and gloves
- Easy to mix and pour
Cons:- Limited to small to medium molds due to volume
- Not suitable for making squishies or highly elastic items
Best for: Beginners or educators making small, quick molds for resin, wax, or soap projects.
Not ideal for: Creators making large molds, or those needing high-volume or ultra-durable molds for long-term use.
- Volume:8 oz
- Cure Time:3-6 hours
- Working Time:30-40 minutes
- Mix Ratio:1:1 by weight
- Color:Translucent
- Material:Platinum-cured silicone
Bottom line: This kit is perfect for beginners or educators who need quick, flexible molds for small projects without sacrificing detail.
How We Picked
These products were evaluated based on performance, ease of use, build quality, and value for different mold-making needs. Priority was given to silicone that offers consistent curing, flexibility, and durability. We also considered the versatility of formulations—whether food-safe or suitable for casting—as well as user-friendly features like clear mixing ratios and bubble-free curing. Products were ranked to reflect a balance of quality and affordability, with an eye toward beginners, hobbyists, and professionals alike. The top picks are those that stand out for their reliability, ease of handling, and overall value in the platinum cure silicone market.Factors to Consider When Choosing Best Platinum Cure Silicone For Molds
Choosing the best platinum cure silicone for molds involves understanding several key factors. Not all silicones are created equal—some excel in flexibility, others in hardness or food safety. Recognizing your specific project needs and skill level helps narrow down options. Pay attention to formulation details, curing times, and handling characteristics to avoid common pitfalls like bubbles or incomplete curing. A well-chosen silicone not only produces better molds but also saves time and money over the long run.Cure Hardness and Flexibility
Silicone hardness, measured in Shore A, influences mold flexibility and durability. Softer silicones (around 10-20A) are excellent for intricate, delicate molds that need to flex without tearing. Harder silicones (above 30A) tend to be more durable and resistant to tearing but may be less flexible, making demolding more difficult. Matching hardness to your project ensures a smooth process and a high-quality final mold, especially when working with complex or detailed designs.
Formulation and Food Safety
Not all platinum cure silicones are safe for food contact or skin. If your molds will hold edible materials or be used for skin contact, selecting food-safe formulations marked as such is essential. These silicones are designed to meet strict safety standards but often come at a higher cost and require careful handling. For non-food applications, standard formulations usually suffice and tend to be more affordable.
Curing Time and Ease of Use
Curing time impacts your workflow; faster cures can save time but might be less forgiving during mixing. Kits with simple 1:1 volume ratios and bubble-free curing features tend to be easier for beginners. Longer curing times sometimes allow for better precision and fewer air bubbles, but they delay project completion. Understanding your project timeline helps in selecting a silicone that balances speed and ease of handling.
Cost and Kit Completeness
Price varies widely depending on formulation, quantity, and included accessories. Higher-quality silicones often cost more but provide longer-lasting molds and better results. Kits with mixing tools, release agents, and detailed instructions can add value, especially for beginners. Avoid choosing solely based on price—consider the overall package and how it aligns with your project scope and skill level.
Durability and Reusability
For frequent mold makers, durability matters. Silicone with higher tear strength and resistance to deformation ensures longer mold life, which can justify a higher upfront cost. Reusable silicones save money over time but require proper curing and storage. Assess your usage frequency and storage conditions to select a silicone that balances initial investment with long-term performance.
Frequently Asked Questions
Is platinum cure silicone safe for food molds?
Many platinum cure silicones are designed to be food-safe, meeting strict safety standards for contact with edible products. Always check the manufacturer’s specifications to confirm if the silicone is labeled as food-grade. Using food-safe silicone is crucial if molds will be used for baking, chocolate, or other consumables, as it reduces health risks and ensures compliance with safety regulations.
How do I prevent bubbles in my silicone molds?
Bubbles are a common issue in silicone casting and can compromise detail and surface finish. Using a slow mix technique and degassing the silicone before pouring helps reduce bubbles. Some kits include bubble-release agents or have faster curing times to minimize trapped air. Proper mixing and pouring at a low height can also improve mold quality significantly.
Can I use these silicones for casting resins and other materials?
Yes, platinum cure silicones are versatile and suitable for casting resins, wax, soap, and more. However, compatibility varies by formulation, so checking the product specifications is essential. For best results, select a silicone explicitly rated for your casting material, and consider the silicone’s flexibility and tear strength based on your project’s demands.
How long does platinum cure silicone typically last for molds?
With proper care, platinum cure silicone molds can last for dozens of uses, often exceeding 50 cycles. The durability depends on factors such as the silicone’s formulation, the complexity of the mold, and how carefully it is stored. High-quality silicones with higher tear resistance tend to last longer, making them a better investment for frequent use.
What’s the main difference between platinum and other silicone types?
Platinum cure silicones are known for their purity, flexibility, and skin-safe qualities, making them ideal for detailed molds and food-safe applications. They cure at room temperature and produce less odor compared to other types like tin-cure silicones. While generally more expensive, their superior properties often justify the cost for professional or sensitive applications.
Conclusion
For a beginner or hobbyist seeking ease of use and affordability, the 16oz Platinum Cure Silicone Mold Making Kit for Beginners offers a straightforward start. Professionals or frequent mold makers should consider the BBDINO Shore 15A Starter Kit for its balance of flexibility and durability. Those prioritizing food safety and long-term reuse will find the Platinum Cure Mold Making Silicone 15A ideal. For high-end projects demanding maximum detail and longevity, investing in premium options makes sense. Overall, matching your project needs and experience level will ensure the best results from your silicone choice.
