---
product_id: 57550100
title: "ULTRACAL 30 Gypsum Cement - Plaster - for Dot Mandala, Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail (10 lb)"
brand: "laguna"
price: "KSh39637"
currency: KES
in_stock: true
reviews_count: 8
category: "Laguna"
url: https://www.desertcart.co.ke/products/57550100-ultracal-30-gypsum-cement-plaster-for-dot-mandala-mold-making
store_origin: KE
region: Kenya
---

# 25-35 min set time Exothermic hardening Ultra-fine detail capture ULTRACAL 30 Gypsum Cement - Plaster - for Dot Mandala, Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail (10 lb)

**Brand:** laguna
**Price:** KSh39637
**Availability:** ✅ In Stock

## Summary

> 🎨 Mold your masterpiece with precision and power!

## Quick Answers

- **What is this?** ULTRACAL 30 Gypsum Cement - Plaster - for Dot Mandala, Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail (10 lb) by laguna
- **How much does it cost?** KSh39637 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/57550100-ultracal-30-gypsum-cement-plaster-for-dot-mandala-mold-making)

## Best For

- laguna enthusiasts

## Why This Product

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

## Key Features

- • **Precision Perfect:** Captures museum-quality, ultra-fine details for flawless molds.
- • **Low Expansion Formula:** Minimizes shrinkage ensuring exact replication every time.
- • **Versatile Compatibility:** Ideal for latex, gelatin, phenolic, polyester, and epoxy resin molds.
- • **Durability Meets Strength:** Harder and stronger than standard gypsum cements for lasting results.
- • **Professional Grade Safety:** Designed for expert use with clear safety guidelines to protect your craft.

## Overview

ULTRACAL 30 Gypsum Cement is a professional-grade, rapid-setting plaster designed for high-accuracy mold making and casting. With a low expansion rate and exceptional detail capture, it’s perfect for latex and gelatin molds as well as resin casting. Its durable, museum-quality finish and 25-35 minute set time make it the go-to choice for serious artists and pattern makers seeking flawless, long-lasting results.

## Description

Super-strength gypsum cement recommended where extreme accuracy and greater surface hardness are required, as in duplicator models. Harder and stronger than HYDROCAL A-11 and HYDROCAL B-11 cements, UltraCal 30 cement has the lowest expansion of any rapid-setting gypsum cement available. Has a gradual set and long period of plasticity. Ideal for splash-casting molds and models for phenolic, polyester and epoxy resins. It was designed to give the pattern making industry the ultimate in a gypsum cement tooling medium. MIX RATIO: The manufacture recommended mix-ratio of Ultra Cal 30 is (38 parts water to 100 parts) Ultra Cal 30 by weight. The average setup time is 25-35 minutes when manually mixed. Please note that parts can be in grams, ounces or pounds etc. Do not mix with your hands, A paint paddle or electric paint mixer is recommended. WARNING: This product is for making molds of industrial patterns only. When mixed with water, ultra cal undergoes a chemical reaction which causes it to harden and then slowly become very hot and highly alkaline (corrosive to skin like drain cleaner.) If mixed incorrectly this process can happen very rapidly. DO NOT attempt to make a mold enclosing any part of the body using this material. Failure to follow these instructions can cause severe chemical burns that may require surgical removal of affected tissue. Dust from products may cause eye, skin, nose, throat, or respiratory irritation. Use eye, skin, and respiratory protection in accordance with good industrial hygiene practices. Keep out of reach of children

Review: This is a great product. It sets up nicely and pretty quick. I highly recommend it. - It’s a very good product. This is my go to when making my molds. It do catch all the details and sets up pretty quickly. I highly recommend.
Review: Best $ can buy - Very good for mold casting. Very fine consistency. Great overall! $$

## Features

- Ultracal 30 Gypsum Cement for Professional Molding and Plaster Casting - 10 lbs
- Very Low Expansion, Very Durable.
- Ideal for Latex Molds and Gelatin Molds. Popular also as a museum quality casting plaster
- Takes Extremely Fine Details!
- Professional Use Only. Can Get Hot When Hardening. Avoid contact with skin and uncured material

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XWR2QD8 |
| Best Sellers Rank | #48,494 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #418 in Sculpture Molding & Casting Products |
| Brand | Laguna |
| Brand Name | Laguna |
| Color | Off White/ Gray |
| Compatible Material | Plastic, Rubber |
| Container Type | Vacuum Sealed Bag |
| Customer Reviews | 4.6 out of 5 stars 946 Reviews |
| Full Cure Time | 35 Minutes |
| Item Form | Powder |
| Item Package Quantity | 1 |
| Manufacturer | USG |
| Material | Cement |
| Material Type | Cement |
| Model | Ultracal3010lbs |
| Other Special Features of the Product | Strong |
| Special Feature | Strong |
| UPC | 821079269279 |
| Unit Count | 160 Ounce |
| Viscosity | Medium |
| Volume | 4731.76 Milliliters |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Laguna
- **Material:** Cement
- **Item Form:** Powder
- **Special Feature:** Strong
- **Color:** Off White/ Gray

## Images

![ULTRACAL 30 Gypsum Cement - Plaster - for Dot Mandala, Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail (10 lb) - Image 1](https://m.media-amazon.com/images/I/61f3kZrnQEL.jpg)

## Questions & Answers

**Q: Is it difficult to remove from a silicone mold once cured?  Thanks!**
A: No... It is very easy to remove from a silicone mold....    It does not stick to it at all....    Just make sure the item is cured....

**Q: What's the beast sealant to use to preserve my mold?**
A: I got a clear seal from Lowe's.   It works great.  Make sure all the paint is dry before you apply it.

**Q: Can this be used in alginate mold for 3D hand sculptures?  if yes how many double hand molds would 10# make?**
A: This gets very warm when setting up. Do not use for hand sculptures

**Q: Can this be usrd on furniture**
A: How do you wanna use it? My go to answer is no it probably shouldn’t be used on furniture. I used it to make molds of clay models.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is a great product. It sets up nicely and pretty quick. I highly recommend it.
*by S***E on November 12, 2025*

It’s a very good product. This is my go to when making my molds. It do catch all the details and sets up pretty quickly. I highly recommend.

### ⭐⭐⭐⭐⭐ Best $ can buy
*by J***. on January 4, 2026*

Very good for mold casting. Very fine consistency. Great overall! $$

### ⭐⭐⭐⭐⭐ Lovely cement
*by A***C on December 7, 2025*

This is nice stuff! The instructions make it sound difficult to use with all the weighing and measuring, but it isn't that complicated. I didn't weigh I just measured -- one part water, 3 parts Hydrocal 30. My piece turned out great. Watch the video about how to use it though. You need to let it sit in the water for a bit and then stir it long enough to get all the lumps out. I didn't do this and my piece still turned out good, but you can see lumps in the Hydrocal 30 on the back. Bubbles, there were a few but I wasnt careful about pouring it. The first time I use a product, I see how picky it is and am not very careful, just yo see how it turns out. Also, I used an intricate mold and didn't ensure the liquid flowed into every crack. My fault. Next time I will be more careful. The cement cures hard in about 15 minutes so you have a bit of time to mix and pour before it starts to harden. I kept it in the mold for a few hours before taking it out. It popped out of the mold easily without using mold release (silicon mold -- DON'T use it in a metal mold!) And was fully cured in about 24 hours. It has a nice feel to it. I can't speak to durability because I didn't want to try to break it, because I assume that, just like anything else made of glass or ceramic, you wouldn't drop or abuse it because it will break. The last point is the product description calls it "white." It is more like a VERY light gray. I would not call it white. The powder is white but when you mix it with water, if you want white you will have a heart attack because with water it turns very gray. It lightens up a lot when fully cured.cures. The pictures show the difference. The light gray is the Hydrocal 30. The white is from another product just to give a comparison.

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-03*