---
product_id: 57750114
title: "Smooth-Cast 325 - Ultra Low Viscosity Liquid Plastics -Gallon Unit"
brand: "smooth-on"
price: "49232 kr"
currency: ISK
in_stock: true
reviews_count: 4
category: "Smooth On"
url: https://www.desertcart.is/products/57750114-smooth-cast-325-ultra-low-viscosity-liquid-plastics-gallon-unit
store_origin: IS
region: Iceland
---

# 72D shore hardness 3 min pot life 1:1 mix ratio Smooth-Cast 325 - Ultra Low Viscosity Liquid Plastics -Gallon Unit

**Brand:** smooth-on
**Price:** 49232 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Cast Fast, Color True, Finish Flawless!

## Quick Answers

- **What is this?** Smooth-Cast 325 - Ultra Low Viscosity Liquid Plastics -Gallon Unit by smooth-on
- **How much does it cost?** 49232 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/57750114-smooth-cast-325-ultra-low-viscosity-liquid-plastics-gallon-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

- • **Effortless 1:1 Mix Ratio:** Simplify your workflow with an easy, equal volume mix—no guesswork required.
- • **Perfect Color Neutrality:** Achieve flawless, vivid color matching with a clear amber base that enhances pigments.
- • **Ultra-Fast Casting Speed:** Demold in just 10 minutes to keep your projects moving at lightning pace.
- • **Versatile Artistic Effects:** Create stunning marble, wood grain, or metallic finishes by adding fillers or powders.
- • **Bubble-Free Results Without Vacuum:** Skip the hassle—get smooth, bubble-free castings straight out of the mix.

## Overview

Smooth-Cast 325 is a professional-grade, ultra low viscosity liquid plastic resin designed for rapid, bubble-free casting with a 3-minute pot life and 10-minute cure time. Its color-neutral clear amber base ensures precise pigment matching, making it ideal for detailed artistic effects like marble, wood grain, and metal finishes. The easy 1:1 mix ratio and Shore 72D hardness deliver reliable, high-quality results favored by advanced hobbyists and pros alike.

## Description

Smooth-Cast 325 is a fast-cast resin that was developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. The ColorMatch Series is formulated "color neutral". Small amounts of pigment will yield accurate, vivid colors from cured castings (use of Smooth-On SO-Strong pigments is highly recommended). Easy to mix and pour, these resins offer the convenience of a one to one mix ratio (by volume). With a 3 minute pot life: 10 minute demold time: Mixed viscocity 100 cps: 72D shore hardness: color is CLEAR AMBER. Because of its neutral color,it is ideal for creating marble and wood grain casting effects, or duplicating the look of real metal by adding bronze, brass or other metal powder .Read MSDS before use - for more information visit www.smooth-on.com

Review: Great product - Excellent product for casting projects, super easy to use and cures extremely fast.
Review: Not good choice for amateurs - Takes practice to get good results for adequate mold

## Features

- Low viscosity casting resin with clear amber color ("Color Neutral" - for best colormatching)
- Vacuum degassing is not necessary to yield castings that are virtually bubble free.
- Pot Life: 3 minutes; Cure Time: 10 minutes
- Shore 72D
- Mix Ratio: 1A: 1B by Volume

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075DHSD31 |
| Best Sellers Rank | #104,909 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #768 in Sculpture Molding & Casting Products |
| Customer Reviews | 4.5 4.5 out of 5 stars (12) |
| Date First Available | September 5, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15 pounds |
| Manufacturer | Smooth-On, Inc. |
| Product Dimensions | 9.6 x 7.8 x 11.8 inches |

## Images

![Smooth-Cast 325 - Ultra Low Viscosity Liquid Plastics -Gallon Unit - Image 1](https://m.media-amazon.com/images/I/61ai5rbtGmL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by K***S on September 6, 2022*

Excellent product for casting projects, super easy to use and cures extremely fast.

### ⭐⭐⭐⭐ Not good choice for amateurs
*by H***N on September 27, 2025*

Takes practice to get good results for adequate mold

### ⭐⭐⭐⭐⭐ Would Purchase Again
*by J***E on April 5, 2020*

Came as described, perfect for any clear resin casting!

## Frequently Bought Together

- Smooth-Cast 325 - Ultra Low Viscosity Liquid Plastics -Gallon Unit
- Smooth-On Universal™ Mold Release Spray, 14 fl. oz. Aerosol Can
- SO-Strong Colorants - For Urethane Rubbers, Plastics, & Foams - Set of 9

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**Shop now:** [https://www.desertcart.is/products/57750114-smooth-cast-325-ultra-low-viscosity-liquid-plastics-gallon-unit](https://www.desertcart.is/products/57750114-smooth-cast-325-ultra-low-viscosity-liquid-plastics-gallon-unit)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-12*