---
product_id: 5665350
title: "Mold Star 30 Silicone Mold Making Kit - Easy to Use & Long-Lasting Silicone Mold (2-Pound)"
brand: "smooth-on"
price: "₩112888"
currency: KRW
in_stock: true
reviews_count: 12
category: "Smooth On"
url: https://www.desertcart.kr/products/5665350-mold-star-30-silicone-mold-making-kit-easy-to-use
store_origin: KR
region: South Korea
---

# 45 min pot life captures fine detail tear-resistant durability Mold Star 30 Silicone Mold Making Kit - Easy to Use & Long-Lasting Silicone Mold (2-Pound)

**Brand:** smooth-on
**Price:** ₩112888
**Availability:** ✅ In Stock

## Summary

> 🛠️ Mold like a pro, create like a visionary!

## Quick Answers

- **What is this?** Mold Star 30 Silicone Mold Making Kit - Easy to Use & Long-Lasting Silicone Mold (2-Pound) by smooth-on
- **How much does it cost?** ₩112888 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/5665350-mold-star-30-silicone-mold-making-kit-easy-to-use)

## 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

- • **Built to Last:** Tear-resistant silicone ensures molds endure countless casts
- • **Detail-Perfect:** Ultra-low shrinkage captures every intricate detail
- • **Relaxed Workflow:** 45-minute working time lets you pour with confidence, no rush
- • **Versatile Casting:** Ideal for wax, gypsum, resin, clay & more
- • **Effortless Precision:** Easy 1:1 mix ratio for flawless molds every time

## Overview

Smooth-On Mold Star 30 is a premium platinum silicone mold-making kit designed for professionals and creatives alike. With a user-friendly 1:1 mix ratio, 45-minute pot life, and tear-resistant, low-shrinkage rubber, it delivers durable, flexible molds that capture fine details perfectly. Perfect for casting a wide range of materials including resin, wax, and gypsum, this kit elevates your mold-making game with reliable, long-lasting results.

## Description

Shop Smooth-On at the desertcart Arts, Crafts & Sewing store. Free Shipping on eligible items. Save on everyday low prices.

Review: Amazing - ⭐️⭐️⭐️⭐️⭐️ Excellent Quality Silicone for Molds!. Silicone is fantastic! It’s easy to mix and pour, and it captures every fine detail perfectly. The curing time is very reasonable, and once set, the mold is strong, flexible, and durable — perfect for resin, clay work. releases cleanly, making the whole process so much easier. This silicone gives professional-quality results every time. I’ll definitely keep using it for all my future projects!
Review: The Perfect Product for Artists and Engineers - I've been following this company for quite a while and I've used some of their other products such as Body Double and the level of quality in the final molds are breathtaking. What drew me to using Mold Star 30 is not only it's easy mix ratio of 1:1 by volume (you can also mix by weight, which I did for my current project in the pictures), its low viscosity makes cast complex parts and 3d prints easy. When you get these, stir each jar VIGOROUSLY with SEPARATE mixing sticks (I used a silicone stir stick or a drill with a mixing paddle, just drill slowly)! Not using separate sticks will cause cross contamination and you'll ruin the material. I also love the colours which helps with knowing when it's mixed, you don't want streaks in it. Now, prepping your part for molding takes some planning on your part and having sulfur free plastilina clay is HIGHLY RECOMMENDED and IMPORTANT, especially on wood mold boxes. Once the two parts are mixed in a cup you have 45 minutes to pour it into the mold. And I like that because I'm not rushing to pour and 45 minutes is PLENTY of time to stir the material and ensure a proper mix. In that time, you check your dry mold, fix a few things, and even take time degassing the silicone (the vacuum pot is optional). After pouring, you'll have to wait 6 hours until it cures. I ended up sitting the mold outside overnight to cure and doing this on a hot summer night helps immensely, especially when using the cups to check on curing. It was 97°F when I poured the silicone and the leftover material was already fully cured 3 hours later! Wow. The only knock I have on this product is the pricing for a pint and the price kept fluctuating here on desertcart, but you get what you pay for. This stuff is high quality and having a few pints actually is a good thing too, so you'll actually use it. Overall, this is easy to use but the learning curve mainly hinges on how well you plan your design and your mold boxes. Also, doing this outdoors helps with odors depending on what region you're in, especially where the air is drier. Once the price falls back to normal, I'll be getting more of these. ADDENDUM: My masters are done in PLA. For those of you who are using resin printed models, make sure the resin is COMPLETELY UV CURED before using this.

## Features

- 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, and other materials
- Easy to use platinum silicone mold mix
- Cures to a soft, stong, tear resistant rubber

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ETAY8RI |
| Best Sellers Rank | #16,410 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #170 in Sculpture Molding & Casting Products |
| Brand Name | Smooth-On |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (736) |
| Item Dimensions | 7.52 x 5.98 x 2.99 inches |
| Item Weight | 0.59 Kilograms |
| Manufacturer | Smooth-On, Inc. |
| Material Type | Silicone |
| Shape | Star |
| UPC | 751635227415 |
| Unit Count | 1.0 Count |
| Warranty Description | No Warranty |

## Product Details

- **Brand:** Smooth-On
- **Color:** Blue
- **Item dimensions L x W x H:** 7.52 x 5.98 x 2.99 inches
- **Material:** Silicone
- **Shape:** Star

## Images

![Mold Star 30 Silicone Mold Making Kit - Easy to Use & Long-Lasting Silicone Mold (2-Pound) - Image 1](https://m.media-amazon.com/images/I/81MxIlm4+KL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: whats the difference between oomo 30 and moldstar ?**
A: OOMOO 30 has a Shore hardness rating of 00-30, which is about as squishy as a gel shoe insert. Moldstar 30 is a hardness of Shore A-30, which is closer to pencil eraser hardness. It’s confusing, but there are 2 Shore hardness scales and a 30 on one is very different from a 30 on the other. In the description when it talks about hardness, pay attention to whether it says Shore A or Shore 00.

**Q: What color is this silicone? Can I use mica powders to color it**
A: It is blue when mixed, and very opaque, so I doubt powders will be able to color it much if at all. If you're looking to label your molds, I've 3D printed mirrored text using a raft, and set it into the mixed material. It floats, and pulls away cleanly once the material is cured.

If you want a platinum cure 2 part silicone around shore-A 30 you can color, I might suggest DragonSkin 30 or Platsil Gel-25.

**Q: Hi. i've made a wax mold of a small animal bone using this silicone method. i'm curious if i can use clay as well. i'm looking to make jewelry..**
A: On Smooth On's website it states that this line of mold will not work with modeling clays that contain sulfur. Their website was very helpful and has lots of information: http://www.smooth-on.com/Silicone-Rubber-an/c2_1115_1341/index.html

**Q: Is this food safe?**
A: No. Smooth On does however make a food safe silicone called Smooth -Sil 940

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing
*by I***S on October 22, 2025*

⭐️⭐️⭐️⭐️⭐️ Excellent Quality Silicone for Molds!. Silicone is fantastic! It’s easy to mix and pour, and it captures every fine detail perfectly. The curing time is very reasonable, and once set, the mold is strong, flexible, and durable — perfect for resin, clay work. releases cleanly, making the whole process so much easier. This silicone gives professional-quality results every time. I’ll definitely keep using it for all my future projects!

### ⭐⭐⭐⭐⭐ The Perfect Product for Artists and Engineers
*by K***S on June 26, 2022*

I've been following this company for quite a while and I've used some of their other products such as Body Double and the level of quality in the final molds are breathtaking. What drew me to using Mold Star 30 is not only it's easy mix ratio of 1:1 by volume (you can also mix by weight, which I did for my current project in the pictures), its low viscosity makes cast complex parts and 3d prints easy. When you get these, stir each jar VIGOROUSLY with SEPARATE mixing sticks (I used a silicone stir stick or a drill with a mixing paddle, just drill slowly)! Not using separate sticks will cause cross contamination and you'll ruin the material. I also love the colours which helps with knowing when it's mixed, you don't want streaks in it. Now, prepping your part for molding takes some planning on your part and having sulfur free plastilina clay is HIGHLY RECOMMENDED and IMPORTANT, especially on wood mold boxes. Once the two parts are mixed in a cup you have 45 minutes to pour it into the mold. And I like that because I'm not rushing to pour and 45 minutes is PLENTY of time to stir the material and ensure a proper mix. In that time, you check your dry mold, fix a few things, and even take time degassing the silicone (the vacuum pot is optional). After pouring, you'll have to wait 6 hours until it cures. I ended up sitting the mold outside overnight to cure and doing this on a hot summer night helps immensely, especially when using the cups to check on curing. It was 97°F when I poured the silicone and the leftover material was already fully cured 3 hours later! Wow. The only knock I have on this product is the pricing for a pint and the price kept fluctuating here on Amazon, but you get what you pay for. This stuff is high quality and having a few pints actually is a good thing too, so you'll actually use it. Overall, this is easy to use but the learning curve mainly hinges on how well you plan your design and your mold boxes. Also, doing this outdoors helps with odors depending on what region you're in, especially where the air is drier. Once the price falls back to normal, I'll be getting more of these. ADDENDUM: My masters are done in PLA. For those of you who are using resin printed models, make sure the resin is COMPLETELY UV CURED before using this.

### ⭐⭐⭐⭐⭐ Works great, nice finished product
*by B***O on October 18, 2016*

Works great and just as advertised as long as you follow the directions. The manufacturer recommends you pour equal amounts of part A and B into separate containers, stir them, then mix together in a separate container and stir, after which they say to pour into a fourth container to finish mixing. I've made a few batches now and as long as you be sure to mix very well (no limp-wristed stirring) then you should be fine without pouring the mixture into a fourth container to finish mixing. Just scrape the sides and bottom of the container well, and the pot life is 45 minutes, so you won't run out of time mixing (not even close). The finished silicone produces a semi-hard but pliable rubber. I'd compare it to the rubber that condensation-catching mats are made from, the kind that line a bartop (can't think of a better name for them), maybe just a little harder than those though. I made a few molds for concrete out of this, and while they weren't the most intricate there were still some angles in the one-part molds that I was worried could wear or break when pulling the concrete out. The silicone has been pliable enough to remove it with some force, while still snapping back to its original shape. I'm sure on a microscopic level, all the pulling will wear it out faster, but I couldn't see anything from looking closely. If you're making a mold of something that has a few turns or twists, or strange angles, I'd recommend a two-part mold. It will also grab detail from whatever you're making the mold from, which is both good, and also something to keep in mind as any imperfections left of the surface of your positive will also be on any reproductions made from the mold.

## Frequently Bought Together

- Smooth-On Mold Star 30-1A:1B Mix by Volume Platinum Silicone Rubber - Pint Unit
- Smooth-On Universal Mold Release - 14 Fluid Ounce Aerosol Can
- Smooth-Cast™ 300: Bright White, Low Viscosity, Liquid Plastic Casting Resin - Pint Unit

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-04-24*