---
product_id: 1871292
title: "Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin - Pint Unit"
brand: "smooth-on"
price: "A$104"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/1871292-smooth-cast-onyx-fast-ultra-black-urethane-resin-pint-unit
store_origin: AU
region: Australia
---

# Cost-effective choice High heat resistance Ultra-black finish Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin - Pint Unit

**Brand:** smooth-on
**Price:** A$104
**Availability:** ✅ In Stock

## Summary

> 🖤 Unleash Your Creativity with ONYX - The Ultimate Black Resin Experience!

## Quick Answers

- **What is this?** Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin - Pint Unit by smooth-on
- **How much does it cost?** A$104 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/1871292-smooth-cast-onyx-fast-ultra-black-urethane-resin-pint-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

- • **Heat Warrior:** Superior heat resistance compared to other black resins on the market.
- • **Safety First:** Crafted without mercury, ensuring a safer workspace.
- • **Budget-Friendly:** Get premium quality without breaking the bank.
- • **Effortless Elegance:** Achieve a stunning black finish without the need for color pigments.
- • **Polish to Perfection:** Easily buff to a high gloss shine for that professional touch.

## Overview

Smooth-Cast Onyx Fast is a pint unit of ultra-black urethane resin that offers a high-gloss finish without the need for additional color pigments. It is mercury-free, boasts superior heat resistance, and is more affordable than competing black resins, making it an ideal choice for both professionals and DIY enthusiasts.

## Description

Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin - Pint Unit

## Features

- Convenient if you desire a black casting, adding color pigment is not necessary (can be polished and buffed to a high gloss shine)
- Unlike other black resins, ONYX does not contain mercury
- ONYX offers higher heat resistance vs. competitive black resins
- ONYX is less expensive vs. other black resins
- Shore 80D

## Product Details

- **Brand:** Smooth-On
- **Color:** Black
- **Age Range (Description):** Adult
- **Material:** Plastic
- **Item Weight:** 1 Kilograms
- **Number of Items:** 1
- **Recommended Uses For Product:** Modeling
- **Included Components:** Clay, Sculpting Tools
- **Item dimensions L x W x H:** 5.9 x 3.1 x 7.7 inches
- **UPC:** 751635403413

## Images

![Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin - Pint Unit - Image 1](https://m.media-amazon.com/images/I/718dd+OVBjL.jpg)

## Available Options

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

## Frequently Bought Together

- Smooth-Cast Onyx Fast - Ultra-Black Urethane Resin - Pint Unit
- 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

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**Shop now:** [https://www.desertcart.com.au/products/1871292-smooth-cast-onyx-fast-ultra-black-urethane-resin-pint-unit](https://www.desertcart.com.au/products/1871292-smooth-cast-onyx-fast-ultra-black-urethane-resin-pint-unit)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-17*