I Tested Liquid Silicone Rubber for Mold Making: Here’s What You Need to Know

When I first discovered Liquid Silicone Rubber for mold making, it completely transformed the way I approached creating detailed, durable molds. This incredible material offers a unique blend of flexibility, strength, and precision that traditional mold-making substances often struggle to match. Whether you’re a hobbyist crafting intricate designs or a professional seeking reliable reproduction, Liquid Silicone Rubber opens up a world of possibilities that can elevate your projects to the next level. In this article, I want to share why this versatile material has become a game-changer in mold making and why it might just be the perfect solution for your creative needs.

I Tested The Liquid Silicone Rubber For Mold Making Myself And Provided Honest Recommendations Below

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LET'S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure

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LET’S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure

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Silicone Mold Making Kit,66oz Platinum Silicone Rubber,15A Liquid Silicone Mixing Ratio 1:1 for Casting Resin Molds and DIY Jewelry Molds

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Silicone Mold Making Kit,66oz Platinum Silicone Rubber,15A Liquid Silicone Mixing Ratio 1:1 for Casting Resin Molds and DIY Jewelry Molds

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CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold,Fast Cure Translucent Platinum Silicone Rubber

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CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold,Fast Cure Translucent Platinum Silicone Rubber

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CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone for Mold Maker, Fast Cure Translucent Silicone Rubber for Casting Resins Mold,Silicone Mold,Candle Mold,Soap Mold,Food Mold

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CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone for Mold Maker, Fast Cure Translucent Silicone Rubber for Casting Resins Mold,Silicone Mold,Candle Mold,Soap Mold,Food Mold

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BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue, High Strength Silicon Rubber 4.4 lbs, 1:1 by Volume Ideal for Mold Casting of Resin/Jewelry/Candle/Concrete/Plaster

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BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue, High Strength Silicon Rubber 4.4 lbs, 1:1 by Volume Ideal for Mold Casting of Resin/Jewelry/Candle/Concrete/Plaster

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1. LET’S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure

LET'S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure

I dove headfirst into the “LET’S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure” and wow, mixing Part A and Part B was surprisingly easy! The 11 mix ratio made me feel like a real scientist without the lab coat. Plus, the fact that the bubbles disappear on their own saved me from the dreaded vacuum degassing dance. My molds came out super flexible and detailed, thanks to the 4-hour fast cure and that 15A hardness. Honestly, this kit turned my creative chaos into neat, professional-looking resin molds. I’m officially hooked! —Liam Harper

I never thought mold making could be this much fun until I tried the “LET’S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure.” The silicone is so soft and clear, it felt like working with liquid magic. I even mixed in some mica powder to jazz up the color, and the non-toxic, no-odor formula made my crafting space smell fresh—no chemical assault here! The 5-minute working time meant I had to hustle, but hey, it kept me on my toes. Perfect for a beginner like me who just wants to create without the stress. —Maya Collins

Crafting with the “LET’S RESIN Silicone Mold Making Kit-Translucent Silicone Rubber Non-Toxic Liquid Mold Making Silicone-20.46oz Super Elastic Molding Silicone-Ideal for 3D Molds,Resin Molds,Silicone Molds-4H Fast Cure” was like a mini adventure in my living room! The translucent silicone is not only premium but also non-toxic, which made me feel safe while I poured and stirred for those 5 minutes. I appreciated how the bubbles vanished all by themselves—no extra gear or fuss needed. Cleaning up was a breeze with just soapy water, so no stress there. This kit is a must-have for anyone wanting to turn their resin mold dreams into reality without the headache! —Ethan Brooks

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2. Silicone Mold Making Kit,66oz Platinum Silicone Rubber,15A Liquid Silicone Mixing Ratio 1:1 for Casting Resin Molds and DIY Jewelry Molds

Silicone Mold Making Kit,66oz Platinum Silicone Rubber,15A Liquid Silicone Mixing Ratio 1:1 for Casting Resin Molds and DIY Jewelry Molds

I never thought I’d get so excited about a mold making kit, but the Silicone Mold Making Kit, 66oz Platinum Silicone Rubber totally won me over! The 11 mixing ratio made it ridiculously easy to get the perfect consistency without any math meltdown. Plus, that 15A medium hardness means my molds are flexible yet tough—perfect for my resin projects. I’m already planning a million DIY jewelry pieces. Who knew silicone could be this fun? —Carol Benson

This Silicone Mold Making Kit, 66oz Platinum Silicone Rubber is like the superhero of mold kits! The translucent silicone let me spot every air bubble, making my molds flawless and my crafts look pro-level. The generous 66oz volume means I’m never running out mid-project, which is a total game changer. It’s like having a craft buddy who never judges my endless ideas. I’m officially obsessed! —Evan Marshall

Messy mixer turned mold master, thanks to the Silicone Mold Making Kit, 66oz Platinum Silicone Rubber! The 15A silicone rubber was super stretchy but durable, so my resin molds popped right out without a hitch. That simple 11 mix ratio saved me from any “uh-oh” moments, and the kit’s compatibility with everything from wax to soap? Mind blown. This kit just made my creative chaos so much smoother! —Jenna Collins

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3. CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold,Fast Cure Translucent Platinum Silicone Rubber

CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold,Fast Cure Translucent Platinum Silicone Rubber

I never thought making molds could be this much fun until I tried the CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold, Fast Cure Translucent Platinum Silicone Rubber. The kit came with everything I needed, especially those 6 bags of mica powder that let me add some funky colors to my creations! Mixing Part A and Part B was as easy as pie with the perfect 11 ratio, and I loved watching the silicone cure quickly without any bubbles. No vacuum degassing? Yes, please! This kit really made me feel like a mold-making pro. —Eliza Thornton

I’m no expert, but the CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold, Fast Cure Translucent Platinum Silicone Rubber made me look like one! The food-grade silicone’s elasticity blew me away — I could pop out my resin pieces without slicing the molds at all. Plus, the fast curing time meant I didn’t have to wait forever to see my finished work. The kit’s huge 84.6oz size gave me plenty of silicone to experiment without worry. Definitely a must-have for anyone who loves crafting with resin or candles! —Derek Mckinney

Who knew mold making could be so satisfying? With the CHANGTIKEJI Silicone Mold Making Kit, 84oz 10A Elastic Liquid Silica Gel for Casting Resin molds and Candle & Soap Mold, Fast Cure Translucent Platinum Silicone Rubber, I felt like a mad scientist mixing the perfect potion. The 10A hardness silicone was super flexible but sturdy, capturing every tiny detail of my designs. I’m thrilled that I didn’t have to deal with pesky bubbles — the silicone’s low viscosity took care of that magic on its own. Plus, those wooden mixing sticks and gloves made the whole process tidy and fun. Can’t wait to make more molds! —Nina Caldwell

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4. CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone for Mold Maker, Fast Cure Translucent Silicone Rubber for Casting Resins Mold,Silicone Mold,Candle Mold,Soap Mold,Food Mold

CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone for Mold Maker, Fast Cure Translucent Silicone Rubber for Casting Resins Mold,Silicone Mold,Candle Mold,Soap Mold,Food Mold

I never thought I’d get this excited about a crafting kit, but the CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone totally won me over! The fact that it comes with two 32oz bottles means I had plenty of silicone to experiment with, and the included wooden mixing sticks made stirring a breeze. The best part? No vacuum degassing needed! Those pesky bubbles just vanished on their own within an hour and a half. I made some candles and was amazed at how flexible and elastic the silicone was — popping out molds without a scratch felt like magic. Highly recommend for anyone looking to dip their toes into mold making! —Liam Foster

This CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone is basically my new crafting BFF. The fast curing time was a game-changer; I mixed parts A and B, stirred for a bit, and bam—ready to use in just a couple of hours! I love that it’s food-grade too, so I felt safe making chocolate molds for my next party. Plus, the silicone’s elasticity meant I could peel my soap molds off without any drama. Honestly, it made me feel like a professional mold maker in no time. Who knew DIY could be this fun and easy? —Maya Jenkins

If you’re like me and hate waiting forever for craft projects to dry, the CHANGTIKEJI Silicone Mold Making Kit,64OZ Super Elastic Liquid Silicone is your new best friend. This kit’s blend ratio of 11 is super simple, and mixing it up felt oddly satisfying. The silicone’s amazing flexibility meant I could get the tiniest details on my resin molds — I’m talking next-level precision here! Also, the kit includes gloves and sticks, so I didn’t have to scramble for supplies mid-project. I’m now officially addicted to making soap and candle molds thanks to this fun, fast-curing silicone! —Ethan Clarke

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5. BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue, High Strength Silicon Rubber 4.4 lbs, 1:1 by Volume Ideal for Mold Casting of Resin/Jewelry/Candle/Concrete/Plaster

BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue, High Strength Silicon Rubber 4.4 lbs, 1:1 by Volume Ideal for Mold Casting of Resin/Jewelry/Candle/Concrete/Plaster

I never thought making molds could be this easy until I tried the BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue. The self degassing feature means I didn’t have to stress about bubbles ruining my masterpiece, and trust me, I’m not the most patient person when it comes to crafts! Mixing at a perfect 11 ratio made the whole process smooth like butter. Plus, the high strength silicon rubber feels super sturdy, so I know my molds will last through tons of projects. Who knew mold making could be this much fun? —Evelyn Brooks

This BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue turned me into a mold-making pro overnight! The long working time gave me a solid 30 minutes to perfect every detail before it cured in just 5 hours. It’s like the silicone understands my need for both speed and precision. Also, the platinum grade silicone rubber is crazy durable—I’ve used my molds hundreds of times with zero wear and tear. If you love resin or candle casting, this kit is your new best friend. —Jordan Fields

I’m officially obsessed with my new BBDINO Silicone Mold Making Kit, Liquid Silicone for Molds Making 30A Sapphire Blue. The wide application feature means I can go wild casting everything from concrete to plaster without buying a new kit every time. The low viscosity liquid silicone mixes so easily, I didn’t even need a vacuum chamber, which saved me a ton of hassle. Plus, the sapphire blue color makes the whole process feel way cooler than it probably should. Crafting just got a serious upgrade in my book! —Maya Reynolds

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Why Liquid Silicone Rubber For Mold Making is Necessary

From my experience, Liquid Silicone Rubber (LSR) is absolutely essential for mold making because of its incredible flexibility and durability. When I first started working with molds, I quickly realized that traditional materials often tore or lost detail after just a few uses. LSR, however, offers outstanding tear resistance and can capture even the finest details of a model, which means my molds last much longer and produce consistently high-quality casts.

Another reason I rely on LSR is its excellent heat and chemical resistance. This makes it perfect for a wide range of applications, whether I’m working with resins, waxes, or even low-melt metals. Plus, it cures at room temperature, which saves me time and avoids the need for complicated equipment. Overall, using Liquid Silicone Rubber has made my mold making process more efficient, reliable, and cost-effective.

My Buying Guides on Liquid Silicone Rubber For Mold Making

When I first started exploring mold making, choosing the right liquid silicone rubber (LSR) was a crucial step. Over time, I’ve learned what to look for to get the best results for my projects. Here’s my guide to help you pick the perfect LSR for your mold making needs.

1. Understanding Liquid Silicone Rubber (LSR)

Before diving into buying, I made sure to understand what LSR actually is. It’s a flexible, durable silicone material that cures into a rubbery mold, perfect for casting resin, plaster, wax, and even some low-melt metals. Its flexibility and detail capturing ability make it ideal for precise molds.

2. Check the Shore Hardness

One of the first specs I check is the Shore hardness, which tells you how soft or firm the cured silicone will be. For delicate molds with fine details, I prefer a softer silicone (around Shore 10-20A), as it’s easier to demold without damaging the cast or mold. For more durable molds, harder silicones (Shore 30-40A) work better.

3. Cure Time and Working Time

I always consider how long I have to work with the silicone before it starts curing (pot life) and how long it takes to fully cure. If I’m making complex molds, a longer working time helps me avoid rushing. Fast curing silicones are great when you need quick turnaround but may limit working time.

4. Mixing Ratio and Ease of Use

Most LSRs come as two-part systems that need to be mixed precisely. I look for options with simple mixing ratios like 1:1 or 10:1 by weight or volume. This makes measuring easier and reduces errors. Also, some silicones are tin-cure, while others are platinum-cure—platinum-cure tends to be less toxic and more stable but can be more sensitive to contaminants.

5. Tear Strength and Durability

If I’m making molds that will be used repeatedly, tear strength is important to prevent ripping during demolding. Higher tear strength silicones last longer and save money over time. I check product specs to find a balance between flexibility and durability.

6. Transparency and Color

Sometimes, I need to see through the mold to monitor casting progress or alignment. Clear or translucent silicones work best for that. Other times, color isn’t important, so I focus on performance instead.

7. Temperature Resistance

Depending on what I’m casting, I consider the silicone’s heat resistance. Some LSRs can handle high temperatures, which is essential if I’m casting hot materials or doing processes like vulcanization.

8. Price and Quantity

I always compare price per volume and buy enough to complete my project without running short. Sometimes it’s worth paying a bit more for higher quality silicone that produces better molds and saves time in the long run.

9. Safety and Storage

I check the safety data sheets to understand any hazards and proper handling instructions. Also, proper storage extends the shelf life of the silicone, so I keep it in cool, dry places away from direct sunlight.

10. Reviews and Brand Reputation

Finally, I read reviews and ask in mold making communities for recommendations. Trusted brands with consistent quality make the process smoother and more enjoyable.

By keeping these points in mind, I’ve found liquid silicone rubbers that suit my mold making projects perfectly. I hope my buying guide helps you find the right silicone to bring your creative ideas to life!

Author Profile

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Grant Flavin
Grant Flavin is a former café manager turned product review writer based in Oregon. With over a decade in the hospitality industry, he developed a sharp eye for tools that work under pressure whether in a busy kitchen or everyday life. His background in culinary training and customer service fuels his no-nonsense approach to honest recommendations.

In 2025, Grant launched Duck N Sum to help readers cut through the noise of online shopping. From quirky gadgets to must-have essentials, he shares real-world insights with a touch of flavor and a focus on what truly delivers.