---
product_id: 209451375
title: "Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming 10 lb"
brand: "usg interiors"
price: "KSh37907"
currency: KES
in_stock: true
url: https://www.desertcart.co.ke/products/209451375-hydro-stone-plaster-for-scenery-dioramas-dentistry-and-mold-casting
store_origin: KE
region: Kenya
---

# Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming 10 lb

**Brand:** usg interiors
**Price:** KSh37907
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming 10 lb by usg interiors
- **How much does it cost?** KSh37907 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/209451375-hydro-stone-plaster-for-scenery-dioramas-dentistry-and-mold-casting)

## Best For

- usg interiors enthusiasts

## Why This Product

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

## Description

Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming 10 lb

## Product Details

- **Brand:** USG Interiors
- **Material:** gypsum
- **Compatible Material:** Stone
- **Item Form:** Powder
- **Color:** Gray

## Images

![Hydro-Stone Plaster for Scenery, Dioramas, Dentistry and Mold Casting, Also Great for Model Railroads & Gaming 10 lb - Image 1](https://m.media-amazon.com/images/I/51U-tQe70zL.jpg)

## Questions & Answers

**Q: What does the TB after the name mean?**
A: USG Hydrostone TB is the low-expansion version of regular Hydrostone.  Values from the USG Datasheets, first value is Hydrostone, second is Hydrostone TB
Mix Ratio, by weight, parts water to parts powder:  32, 30 to 32
Setting Time:  19-25min, 15-23min
Compressive Strength, 1 Hour:  4,000psi, 3,000psi
Compressive Strength, Dry:  10,000psi, 8,000psi
pH:  7.73, 11.13
Max Expansion:  0.24%, 0.09%

Setting time is influenced by the temperature of the water and powder when mixing.  Temps in the range of 50-70F extend the setting time, while temps in the range of 70-90F shorten the setting time.  Above 80F, the setting time may be just a few minutes.

Compressive strength is influenced by completeness of mixing, and USG recommends a power mixing blade for larger batches.  A kitchen whisk tool with vigorous motion works for small batches, roughly less than 0.5lb/250g.

**Q: Would this be hard enough to cast small details without those small details easily breaking off? And strong enough to send through the mail?**
A: Yes it is very hard. I mail things that are made of hydro stone all the time. I do wrap the thinnest pieces with extra bubble wrap. Hope that is helpful.

**Q: Is this good for body casting art (pouring into the casted mold) or is there something better to use?**
A: Don’t think it would be good for that because there are warnings that it can cause irrational or burns to skin. I used it for molding walls and floor tiles for miniature gaming. Worked great for that.

**Q: How well does it take color?**
A: Before painting you will need a clear sealer. I use spray paint.

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**Shop now:** [https://www.desertcart.co.ke/products/209451375-hydro-stone-plaster-for-scenery-dioramas-dentistry-and-mold-casting](https://www.desertcart.co.ke/products/209451375-hydro-stone-plaster-for-scenery-dioramas-dentistry-and-mold-casting)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-17*