What size does this make

This kit will yield 51.2 cubic inches of material.

what's the difference between this mold star and the 16 fast?

This version has no color - it is cloudy clear.

Will different silicones stick together when making a mold? I ran out so part of my mold is cured?

You should be fine with using other silicones if you use a silicone release spray when you create your mold. Something like "Smooth-On Universal Mold Release" would be sufficient.

Been wanting to try this. Is there a step by step tutorial before I buy it ?

Yes, if your looking for tutorial videos, go to https://www.smooth-on.com/tutorials/ to learn about the many different mold making techniques.

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Smooth-On Mould Star 20T Silicone Mould Making Rubber - Trial Unit

Smooth-On Mould Star 20T Silicone Mould Making Rubber - Trial Unit

Product ID: 254560414

Details

Brand
Smooth-On
Colour
Multicolor
Item dimensions L x W x H
15 x 14.7 x
Material
Silicone Metal
Shape
Star

⏳30 min demold time, fast turnaround

🔥Heat resistant up to 450°F (232°C)

⚖️1:1 volume mix ratio, no scale needed

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R2211

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In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Mold like a pro, create like a visionary!

RAPID MOLD CREATION - Demold in just 30 minutes—speed up your prototyping and beat deadlines.
DURABLE TEAR RESISTANT - Soft yet strong silicone rubber that stands up to repeated use without shrinking.
TRANSLUCENT CUSTOMIZABLE - Pourable, clear silicone perfect for adding pigments and creating unique molds.
EFFORTLESS PRECISION MIXING - Mix 1:1 by volume—no scales, no hassle, just perfect blends every time.
VERSATILE CASTING COMPATIBILITY - Ideal for wax, gypsum, resin, concrete, and even low-temp metal alloys.

Smooth-On Mould Star 20T is a translucent, platinum-cure silicone rubber with a user-friendly 1:1 volume mix ratio. It cures quickly in 30 minutes to a soft, tear-resistant mold with Shore 20A hardness, offering heat resistance up to 450°F. Perfect for diverse casting materials, it delivers durable, low-shrinkage molds ideal for professionals seeking fast, reliable results.

Specifications

ASIN	B00LU4YFK6
Brand Name	Smooth-On
Color	Multicolor
Customer Reviews	4.6 4.6 out of 5 stars (714)
Item Dimensions	15 x 14.7 x 8.1 centimeters
Item Weight	2.4 Pounds
Manufacturer	Smooth-On Inc
Manufacturer Part Number	3573423
Material Type	Silicone Rubber Metal
Model Number	3573423
Number of Pieces	1
Shape	Star
UPC	751635587410
Unit Count	1.0 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R2211

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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