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🛠️ Mold like a pro, last like a legend.
Smooth-On Mold Star 30 is a premium platinum silicone rubber designed for high-detail, durable molds. Featuring a balanced 1:1 mix ratio, 45-minute pot life, and a 6-hour cure time, it delivers a tear-resistant, heat-resistant (up to 450°F) mold with a firm 30A Shore hardness. Perfect for casting a wide range of materials including wax, gypsum, resins, and concrete, it’s the go-to choice for professionals seeking reliability and precision without the hassle of vacuum degassing.





| ASIN | B00ETAY8RI |
| Best Sellers Rank | 206,907 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 572 in Sculpting Moulding & Casting |
| Brand | Smooth-On |
| Brand Name | Smooth-On |
| Colour | Blue |
| Country Of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 698 Reviews |
| Item Dimensions | 19.1 x 15.2 x 7.6 centimetres |
| Item Shape | Star |
| Item Weight | 0.59 Kilograms |
| Item dimensions L x W x H | 19.1 x 15.2 x 7.6 centimetres |
| Manufacturer | Smooth-On |
| Manufacturer Part Number | moldstar30 |
| Material | Silicone |
| Material Type | Silicone |
| Model Number | COMINHKR067156 |
| Number of Pieces | 1 |
| Number of pieces | 1 |
| Shape | Star |
| UPC | 751635227415 |
| Unit Count | 1.0 count |
M**L
Easy to use, strong, excellent detail capture
Easy to use, great working time and strong upon curing. It's also well worth mentioning that the level of detail you can capture with this product is mind blowing. Work as advertised, and intended which is ideally what you want for any product at the end of the day.
D**G
Perfect for small molds.
This stuff is the best! I'm molding small resin pieces for jewelry and displays, and using the Crystal Clear resin in the molds. I realized after two molds, that my cure time was longer because my house was a little cold. But really. It ended up with no air bubbles in it even!! I'm in love.
A**R
Very good
Very Good, very supple, dries in 4hours, and has a good final texture.
İ**A
Survived my chaos and still made a perfect mold
I bought this for a “quick little project” which somehow turned into me panicking, spilling silicone everywhere, trapping objects in glass containers, and questioning my life choices at 2 AM. And honestly? This silicone still performed beautifully. The mix ratio was easy enough that even a sleep-deprived beginner could handle it, the bubbles were minimal, and the cured mold came out flexible, strong, and super detailed. I used it for casting decorative pieces and it picked up every tiny texture perfectly. Biggest surprise: it actually gives you enough working time before curing, so you’re not fighting the clock like in some other products. Demolding was also way easier than expected. A few helpful notes for beginners: * Mix slowly if you want fewer bubbles * Don’t underestimate how well this stuff sticks around once spilled * Use gloves unless you want “mysterious silicone fingerprints” on everything you own for 3 days Overall, excellent product. My project survived, my sanity mostly survived, and now I want to mold everything in my apartment.
F**L
Warum nicht mehr angeboten
Produkt ist super. Warum wird nicht mehr angeboten. Benötige dringend 2x
M**A
Simple to use and efficient
The product is easy to mix (use a scale), the mix of colors tells you when ready to use, it is tick enough to hold itself but will fit the tiniest crack, will cure in 4-6 hours (I added an infrared heater to help), will detach easily and remain flexible, solid and firm after curing. I use it to duplicate concrete wall stones and it works very well. NB: Make sure your structure has no leak otherwise the liquid rubber will seek through.
J**A
Moldes de silicona
Me a parecido pequeño…y el prospecto en inglés…así que me tendré que buscar la vida…pero gracias de todos modos 👍👍
A**A
No me sirve
El color de la silicona es azul el bote B y el A beige no me sirve para nada de lo tenía pensado hacer pensé que era transparente y me he equivocado así que dinero a la basura
Trustpilot
2 weeks ago
5 days ago