---
product_id: 48207963
title: "SmoothOn Moldstar 15 Slow Molding Silicone by Smooth"
brand: "smooth-on"
price: "$3864"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/48207963-smoothon-moldstar-15-slow-molding-silicone-by-smooth
store_origin: MX
region: Mexico
---

# 50 min pot life 450°F heat resistance 1:1 mix ratio, no scale SmoothOn Moldstar 15 Slow Molding Silicone by Smooth

**Brand:** smooth-on
**Price:** $3864
**Availability:** ✅ In Stock

## Summary

> 🔥 Mold your masterpiece with ease and precision!

## Quick Answers

- **What is this?** SmoothOn Moldstar 15 Slow Molding Silicone by Smooth by smooth-on
- **How much does it cost?** $3864 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/48207963-smoothon-moldstar-15-slow-molding-silicone-by-smooth)

## 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 Compatibility:** Withstands up to 450°F, ideal for low-temp metal casting and versatile projects.
- • **Durable & Tear-Resistant:** Soft yet strong silicone rubber that withstands repeated use and tough casting materials.
- • **Versatile Casting Partner:** Perfect for wax, gypsum, resins, concrete, and more—expand your creative horizons.
- • **Effortless Precision Mixing:** 1:1 volume ratio means no scales, no hassle—just perfect molds every time.
- • **Long Pot Life for Creative Freedom:** 50 minutes to mix and pour, giving you ample time to perfect your craft without rush.

## Overview

Smooth-On Mold Star 15 is a platinum silicone molding rubber designed for professionals and creatives seeking durable, tear-resistant molds. Featuring a user-friendly 1:1 mix ratio by volume, a generous 50-minute pot life, and a 4-hour cure time, it supports casting materials from wax to concrete and can endure heat up to 450°F. Ideal for high-quality, repeatable molds without the need for vacuum degassing.

## Description

SmoothOn Moldstar 15 Slow Molding Silicone by Smooth

## Features

- Easy to use platinum silicone mold mix
- Cure to soft, strong, tear resistant rubbers
- Good for casting wax, gypsum, resins, concrete and more
- Pot life of 50 minutes and cure time of 4 hours
- Mix ratio is 1A:1B by volume- no weighing scale necessary

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 19.3 x 14.99 x 7.87 cm; 1.09 kg |
| Item model number | SOMoldStar15kit |
| Number of pieces | 1 |
| Batteries Required? | No |
| Batteries included? | No |
| Material Type(s) | Silicone Rubber |
| Colour | Green |
| ASIN | B00ATDV5BQ |

## Product Details

- **Material:** Silicone Rubber
- **Colour:** Green
- **Brand:** Smooth-On
- **Item dimensions L x W x H:** 19.3 x 15 x 7.9 centimetres
- **Shape:** Custom

## Images

![SmoothOn Moldstar 15 Slow Molding Silicone by Smooth - Image 1](https://m.media-amazon.com/images/I/41Axo7OP4YL.jpg)

## Questions & Answers

**Q: Are these pints?  I am looking for the volume, not the weight and I can't seem to find it.**
A: They are pint bottles.

**Q: Is this enough to make a full set of rpg dice molds in small cups?**
A: I ran out after 6 of the 7 dice. I used 4 oz cups and was barely able to make the six molds. The molds did turn out great, though!

**Q: How well does this retain fine details?**
A: It does a great job with details.

**Q: What is the shelf life for parts A and B unmixed?**
A: Hey mOWWck, the shelf life is about 1 year (usually slightly longer than that) if you do not use them. This is an approximate number and based on our experiences in keeping the products in our store.  You should, however, place the products in a low humidity area to keep them longer. Do note that unused silicone last longer than unused resins before the products start gradually losing their properties (such as hardness etc.) Hope this helps and have a great day ahead!!

## Frequently Bought Together

- Mold Star 15 Slow - 1A:1B Mix by Volume Platinum Silicone Rubber - Pint Unit
- Smooth-Cast™ 300: Bright White, Low Viscosity, Liquid Plastic Casting Resin - Pint Unit
- Smooth-On Universal™ Mold Release Spray, 14 fl. oz. Aerosol Can

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**Shop now:** [https://www.desertcart.mx/products/48207963-smoothon-moldstar-15-slow-molding-silicone-by-smooth](https://www.desertcart.mx/products/48207963-smoothon-moldstar-15-slow-molding-silicone-by-smooth)

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-01-22*