---
product_id: 16459202
title: "Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit"
brand: "smooth-on"
price: "344 Lei"
currency: RON
in_stock: true
reviews_count: 10
category: "Smooth On"
url: https://www.desertcart.ro/products/16459202-smooth-on-smooth-cast-305-liquid-plastic-resin-for-special
store_origin: RO
region: Romania
---

# Ultra-low viscosity for bubble-free pours Bright white, perfect for custom coloring Fast 30-minute cure time Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit

**Brand:** smooth-on
**Price:** 344 Lei
**Availability:** ✅ In Stock

## Summary

> ⚡ Cast fast, create fearless — the resin that keeps up with your vision!

## Quick Answers

- **What is this?** Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit by smooth-on
- **How much does it cost?** 344 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/16459202-smooth-on-smooth-cast-305-liquid-plastic-resin-for-special)

## 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

- • **Customizable Canvas:** Bright white resin offers a perfect base for vibrant dyes and effects.
- • **Trusted by Creators:** Highly rated and portable—your go-to resin for professional-grade projects.
- • **Speed Meets Strength:** Cures tough and durable in just 30 minutes—no more waiting around.
- • **Versatile Creative Power:** Ideal for sculptures, prototypes, and special effects with easy 1:1 mixing.
- • **Effortless Precision Casting:** Ultra-low viscosity ensures smooth, bubble-free results every time.

## Overview

Smooth-On Smooth-Cast™ 305 is a fast-curing, ultra-low viscosity white urethane resin designed for bubble-free, durable castings. With a simple 1:1 mix ratio and a quick 30-minute cure time, it’s perfect for small to medium sculptures, prototypes, and special effects. Its bright white finish provides an excellent base for custom coloring, making it a favorite among artists and professionals seeking reliable, high-quality results.

## Description

desertcart.com: Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit : Industrial & Scientific

Review: Great product! - HAHAHA I accidently bought it thinking it was a larger set of silicone for making molds (which they should make), but learned too late that it was not the case. I encased a project I worked 3 weeks on in a huge block of plastic that took 2 weeks of being submerged in acetone to free - my bad. But I later fell in love with it as a material to work with, it cures very quickly and has great integrity and durability. Keep in mind it cures so quickly that vacuuming is not always an option. It is very easy to use and worth the money. You can color it with dye but it mixes translucent and cures opaque so the color it will be is a bit of a guess.
Review: Item was as described - This resin worked very well for my project. The resin itself is quite sturdy after casting and was easy to measure out before casting. I highly recommend!

## Features

- Ultra-Low Viscosity Casting Resin - Virtually bubble-free, bright white resin for quick, versatile castings.
- Broad Application - A fast cure resin for small to medium sculptures, prototype models, special effects props, etc.
- Mix Ratio of 1:1 By Volume - Easy to use urethane resin - Cure Time of 30 minutes - Cures tough & durable.
- Great For Mind-Blowing Effects - The Smooth-Cast Series resin casting kits are excellent for a wide array of coloring & effects.
- Perform a small-scale test of your project materials to determine suitability and compatibility. Refer to the technical bulletin for more information - available on our website.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ZGOSTTY |
| Batteries required | No |
| Best Sellers Rank | #44,952 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #419 in Sculpture Molding & Casting Products |
| Brand | Smooth-On |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (220) |
| Full Cure Time | 30 Minutes |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 16 Fluid Ounces |
| Item Weight | 2 pounds |
| Item model number | Smooth-Cast 305 |
| Manufacturer | Smooth-On, Inc. |
| Material | Plastic |
| Number of Pieces | 2 |
| Package Information | Bottle |
| Product Dimensions | 8 x 6 x 3 inches |
| Special Feature | Portable |
| Specific Uses For Product | Art, Casting |
| UPC | 035239000262 |
| Viscosity Level | Low |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Smooth-On
- **Item Form:** Liquid
- **Material:** Plastic
- **Special Feature:** Portable
- **Specific Uses For Product:** Art, Casting

## Images

![Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit - Image 1](https://m.media-amazon.com/images/I/71OvxkSuDSL.jpg)
![Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit - Image 2](https://m.media-amazon.com/images/I/71Qhy8-t80L.jpg)
![Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit - Image 3](https://m.media-amazon.com/images/I/71xcFoaAWgL.jpg)
![Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit - Image 4](https://m.media-amazon.com/images/I/71HoiUzyuzL.jpg)
![Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit - Image 5](https://m.media-amazon.com/images/I/718GKNffj2L.jpg)

## Questions & Answers

**Q: I want to make a mold of my dogs paw print. Will it pour into a print in the mudd and make a mold?**
A: I would think the moisture would inhibit the curing of the resin, another way to get that imprint would be to pour plaster into the muddy pawprint and let it harden then wash off  the mud.

**Q: How is the pot life?  I dont have a pressure pot so I need a slow set resin for figure parts.  This still may not be enough time for me**
A: Smooth On has three white resins: Smooth Cast 300 is way too fast for me - 3 minutes - the stream of resin I am pouring into a 2nd or 3rd mold becomes a frozen waterfall. Smooth Cast 305 works for me: pot life of 7 minutes so I pour it (clear) into my mold and after 5 minutes it starts to turn cloudy and its cured in 30 minutes. I have never bought it but the literature says they have Smooth Cast 310 with a pot life of 15-20 minutes, cure time 3-4 hours.

**Q: How resistant to ultraviolet light is this material?**
A: Hard to say. I never really thought about that. I usually paint my casted pieces, however I have many extra's casts, that have been laying around for several years, and I do not see any discoloration or any other aging effects. I'd need more information as to what you want to cast, to know if this is the right choice for you, as there are many other casting materials, such as plasters and resins. My advice is to test it out. It's not terribly expensive. You might really like it. I love the stuff,

**Q: I’m looking for a very mailable, rubber, casting material, any suggestions?**
A: for the molds or the items cast out of a mold? with the right mold release, or a PVA liner you can cast silicone into silicone. I also like flexible urethane expanding foam rubber (most of them are self skinning). You can get it in rigid or flexible, and it expands like the cans of greatstuff insulation, but stays foamy/flexible, and it much less expensive than latex foam rubber.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product!
*by L***R on January 8, 2026*

HAHAHA I accidently bought it thinking it was a larger set of silicone for making molds (which they should make), but learned too late that it was not the case. I encased a project I worked 3 weeks on in a huge block of plastic that took 2 weeks of being submerged in acetone to free - my bad. But I later fell in love with it as a material to work with, it cures very quickly and has great integrity and durability. Keep in mind it cures so quickly that vacuuming is not always an option. It is very easy to use and worth the money. You can color it with dye but it mixes translucent and cures opaque so the color it will be is a bit of a guess.

### ⭐⭐⭐⭐⭐ Item was as described
*by A***R on January 6, 2026*

This resin worked very well for my project. The resin itself is quite sturdy after casting and was easy to measure out before casting. I highly recommend!

### ⭐⭐⭐⭐⭐ Excellent Product
*by D***N on February 3, 2023*

I’ve used a lot of casting resins and urethanes and this is one of the best Smooth-On has to offer. I like it better than 300 (2 min pot life and 10 minute cure), as 305 has a manageable pot life of 8 minutes and a cure time of 30. These characteristics make it an ideal material if you need to produce several casts in a day, while providing adequate time to mix and pour into your molds. The plastic is bright white as advertised when cured and durable. I’m producing very small castings (4-6 grams of material at a time) and the 1-1 volume ratio is very easy to mix and follow.

## Frequently Bought Together

- Smooth-On Smooth-Cast™ 305 Liquid Plastic Resin for Special Effects, & More, White - Pint Unit
- Mold Star 15 Slow - 1A:1B Mix by Volume Platinum Silicone Rubber - Pint Unit
- Smooth-On Universal Mold Release - 14 Fluid Ounce Aerosol Can

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-02*