---
product_id: 211907566
title: "Ultracal 30 Gypsum Cement 2.5 lbs - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail"
brand: "usg"
price: "$163.79"
currency: USD
in_stock: true
category: "Usg"
url: https://www.desertcart.us/products/211907566-ultracal-30-gypsum-cement-2-5-lbs-plaster-for-mold
store_origin: US
region: United States of America
---

# Ultracal 30 Gypsum Cement 2.5 lbs - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail

**Brand:** usg
**Price:** $163.79
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Ultracal 30 Gypsum Cement 2.5 lbs - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail by usg
- **How much does it cost?** $163.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/211907566-ultracal-30-gypsum-cement-2-5-lbs-plaster-for-mold)

## Best For

- usg enthusiasts

## Why This Product

- Trusted usg brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Ultracal 30 Gypsum Cement 2.5 lbs - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EK5BRPW |
| Are batteries included? | No |
| Best Sellers Rank | #2,148,563 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,861 in Sculpture Molding & Casting Products #9,805 in Candy Making Supplies |
| Brand | USG |
| Colour | Clear |
| Country of Origin | USA |
| Date First Available | 5 April 2019 |
| Item Dimensions LxWxH | 20.3 x 10.2 x 7.6 Centimeters |
| Item Form | Powder |
| Item Height | 3 Inches |
| Item Package Quantity | 1 |
| Item Volume | 1100 Cubic Centimetres |
| Item Weight | 1 kg 130 g |
| Item Width | 4 Inches |
| Item model number | Ultracal30 |
| Model number | Ultracal30 |
| Net Quantity | 1.00 Count |
| Package Information | Bag |
| Product Dimensions | 20.32 x 10.16 x 7.62 cm; 1.13 kg |
| UPC | 821079268708 |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** USG
- **Colour:** Clear
- **Item Form:** Powder
- **Item Package Quantity:** 1
- **Package Information:** Bag

## Images

![Ultracal 30 Gypsum Cement 2.5 lbs - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail - Image 1](https://m.media-amazon.com/images/I/61cWln7d6RL.jpg)

## Questions & Answers

**Q: If I pour this into wood, would it stick?  I am trying to fill holes and place rocks and have the plaster hold the rocks like a mosaic.**
A: I think you would be better off sticking the rocks in with something like caulking or E6000 glue.  Not sure the cement would hold and it was quite expensive.  You can get caulking in brown or grey to blend with the wood colour for any areas that show.  Just a suggestion.

**Q: When formed into say, a 4” flat stone, how many will this container make? Starting small before committing fully to larger bag!**
A: I have the 5 inch round mold from happy dotting company. I think this bag is going to make 3 rocks if I am lucky. Ive already made two and the bag is almost empty :(

**Q: When molded into a rock, are these strong or do they break easily?**
A: I’ve made many in  molds and had no problems.  I haven’t dropped one but would believe mine are strong enough to hold up.
Love painting on them and friends like them.

**Q: Is the same than hydrocal?**
A: Not sure, have only used Ultracal 30

## Frequently Bought Together

- Ultracal 30 Gypsum Cement 2.5 lbs / 1.13 kg - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail
- Mold for Making Stones with Dome Template - Design #2 - Happy Dotting Company - Round Smooth Pebble Like for dot Art Rocks, Mandala Art DIY Crafts Painting Drawing - Gypsum, Cement Rock Casting
- Tea Light Candle Holder Silicone Mold - by Happy Dotting Company - Round Shape - Tealight Candle Molds for Cement Casting - DIY & Creative Projects - Dotting and Mandala Art

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-20*