---
product_id: 254560414
title: "Mould Star 20T Silicone Mould Making Rubber - Trial Unit"
brand: "smooth-on"
price: "₱10879"
currency: PHP
in_stock: true
reviews_count: 5
category: "Smooth On"
url: https://www.desertcart.ph/products/254560414-mould-star-20t-silicone-mould-making-rubber-trial-unit
store_origin: PH
region: Philippines
---

# Heat resistant up to 450°F (232°C) Fast demold in 30 minutes 1:1 volume mix ratio, no scale needed Mould Star 20T Silicone Mould Making Rubber - Trial Unit

**Brand:** smooth-on
**Price:** ₱10879
**Availability:** ✅ In Stock

## Summary

> ✨ Mold like a pro, cast like a visionary! ⚡

## Quick Answers

- **What is this?** Mould Star 20T Silicone Mould Making Rubber - Trial Unit by smooth-on
- **How much does it cost?** ₱10879 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/254560414-mould-star-20t-silicone-mould-making-rubber-trial-unit)

## Best For

- smooth-on enthusiasts

## Why This Product

- Trusted smooth-on brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **High-Heat Endurance:** Withstands temperatures up to 450°F, ideal for demanding casting projects.
- • **Rapid Turnaround Time:** Demold your masterpiece in just 30 minutes—speed up your creative workflow.
- • **Durable & Tear-Resistant:** Soft yet strong silicone rubber that withstands repeated use without cracking or shrinking.
- • **Effortless Precision Mixing:** Mix 1A:1B by volume—no weighing scale required, saving you time and hassle.
- • **Versatile Casting Compatibility:** Perfect for wax, gypsum, resins, concrete, and even low-temp metal alloys.

## Overview

Smooth-On Mould Star 20T is a translucent platinum-cure silicone rubber with a 1:1 volume mix ratio, offering fast 30-minute demold times and heat resistance up to 450°F. Its low viscosity and tear-resistant properties make it ideal for durable, high-quality molds compatible with a wide range of casting materials, perfect for professionals seeking reliable, efficient mold-making solutions.

## Description

Smooth-On Mold Star rubbers are easy to use platinum silicones which are mixed 1A:1B by volume (no weighing scale necessary). Mold Star silicones feature relatively low viscosities and vacuum degassing is not required for most applications. Mold Star silicones cure to soft, strong rubbers which are tear resistant and exhibit very low long term shrinkage. Molds made with Mold Star will last a long time in your mold library and are good for casting wax, gypsum, resins, concrete and other materials. Cured Mold Star rubber is heat resistant up to 450°F (232°C) and is suitable for casting low-temperature melt metal alloys. Note: THI-VEX is NOT compatible with Mold Star rubbers. MOLD STAR 20T: MIX RATIO: 1:1 by volume; POT LIFE: 6 minutes; DEMOLD TIME: 30 minutes; SHORE A: 20; COLOR: Transparent Read the MSDS before using. Consult the Technical Bulletin for further information. Adult Supervision Required. Keep Out of the Reach of Children

Review: Suitable for molds and rubber casts - I got this first to make a mold for a small sculpture I made in plasticine clay. I used about 2/3 of the product on that two part mold, and I got great results. I then used the rest to make several smaller molds for resin casting various trinkets. I used the last of it to cast rubber feet for a vibration table, which also worked great. Since it's transparent, you can add color to it and use it to cast rubber items. I did have a problem where I tried to use some resin dye to color a batch I used for three smaller molds. Something in the dye prevented it from setting up, and it stayed a viscous goo for days before I finally cleaned off my positives and tried again. I confirmed it was the resin dye by adding it to half of a tiny batch. My recommendation is to use powdered pigments like chalk pastel or mica powder, or to test a small amount first before mixing up a full batch.
Review: Fishing lure molds. - molds turned out great and have made many prototypes. molds are still as good as when they were cast.

## Features

- Packaging may vary Pourable translucent platinum-cure silicone rubber with Shore 20A Hardness

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LU4YFK6 |
| Brand | Smooth-On |
| Brand Name | Smooth-On |
| Color | Multicolor |
| Colour | Multicolor |
| Customer Reviews | 4.6 out of 5 stars 713 Reviews |
| Item Dimensions | 15 x 14.7 x 8.1 centimeters |
| Item Highlight | Silicone Rubber |
| Item Weight | 2.4 Pounds |
| Item dimensions L x W x H | 15 x 14.7 x 8.1 centimeters |
| Manufacturer | Smooth-On Inc |
| Manufacturer Part Number | 3573423 |
| Material | Silicone Rubber Metal |
| Material Type | Silicone Rubber Metal |
| Model Number | 3573423 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Number of pieces | 1 |
| Shape | Star |
| UPC | 751635587410 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Smooth-On
- **Colour:** Multicolor
- **Item dimensions L x W x H:** 15 x 14.7 x 8.1 centimeters
- **Material:** Silicone Rubber Metal
- **Shape:** Star

## Images

![Mould Star 20T Silicone Mould Making Rubber - Trial Unit - Image 1](https://m.media-amazon.com/images/I/41xzlWAcZTL.jpg)

## Questions & Answers

**Q: What size does this make**
A: This kit will yield 51.2 cubic inches of material.

**Q: what's the difference between this mold star and the 16 fast?**
A: This version has no color - it is cloudy clear.

**Q: Will different silicones stick together when making a mold? I ran out so part of my mold is cured?**
A: 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.

**Q: Been wanting to try this. Is there a step by step tutorial before I buy it ?**
A: Yes, if your looking for tutorial videos, go to https://www.smooth-on.com/tutorials/ to learn about the many different mold making techniques.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Suitable for molds and rubber casts
*by A***N on 3 March 2019*

I got this first to make a mold for a small sculpture I made in plasticine clay. I used about 2/3 of the product on that two part mold, and I got great results. I then used the rest to make several smaller molds for resin casting various trinkets. I used the last of it to cast rubber feet for a vibration table, which also worked great. Since it's transparent, you can add color to it and use it to cast rubber items. I did have a problem where I tried to use some resin dye to color a batch I used for three smaller molds. Something in the dye prevented it from setting up, and it stayed a viscous goo for days before I finally cleaned off my positives and tried again. I confirmed it was the resin dye by adding it to half of a tiny batch. My recommendation is to use powdered pigments like chalk pastel or mica powder, or to test a small amount first before mixing up a full batch.

### ⭐⭐⭐⭐⭐ Fishing lure molds.
*by J***Y on 18 October 2024*

molds turned out great and have made many prototypes. molds are still as good as when they were cast.

### ⭐⭐⭐⭐ and the product itself was perfect for what I was doing
*by E***E on 31 October 2017*

Arrived really quickly, and the product itself was perfect for what I was doing, however, the shape of the containers makes it difficult to pour neatly.

## Frequently Bought Together

- Mold Star 20T - 1A:1B Mix by Volume Translucent Platinum Silicone Rubber - Pint Unit
- Smooth-On Universal™ Mold Release Spray, 14 fl. oz. Aerosol Can
- Smooth-On - Smooth-Cast™ 65D Semi-Rigid Urethane Casting Resin - Trial Size Unit

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-10-27*