What does the TB after the name mean?

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.

Would this be hard enough to cast small details without those small details easily breaking off? And strong enough to send through the mail?

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.

Is this good for body casting art (pouring into the casted mold) or is there something better to use?

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.

How well does it take color?

Before painting you will need a clear sealer. I use spray paint.

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USG HYDROSTONE TB 10 lb Bag - Gypsum Cement - Extremely Hard, High Compressive Strength, Fine Detail

USG HYDROSTONE TB 10 lb Bag - Gypsum Cement - Extremely Hard, High Compressive Strength, Fine Detail

Product ID: 483977649

Details

Brand
USG Interiors
Item Form
Powder
Material
stone
Special Feature
durable
Specific Uses For Product
art

🎨captures ultra-fine detail

💪40-50% harder than regular plaster

🏛️high compressive strength & durability

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Description

🏆 Sculpt with strength, detail, and lasting brilliance!

UNMATCHED HARDNESS - Experience 40-50% greater strength than standard casting plaster for lasting masterpieces.
BRIGHT WHITE FINISH - Cures to a brilliant white, enhancing the visual impact of your art and architectural casts.
PRECISION DETAIL CAPTURE - Perfectly replicates intricate textures and fine lines for professional-grade sculptures and trophies.
VERSATILE ARTISTIC MEDIUM - Ideal for dioramas, scenery, and architectural elements demanding both strength and finesse.
WATER RESISTANT DURABILITY - Resists water absorption to maintain integrity and appearance over time.

USG Hydro-Stone TB is a premium gypsum cement powder designed for professional artists and architects. It delivers 40-50% greater hardness than typical plaster, exceptional fine detail reproduction, and high compressive strength with water resistance. Perfect for creating durable, bright white sculptures, trophies, and architectural casts that stand out in both form and function.

Specifications

ASIN	B089QXXS31
Brand	USG Interiors
Brand Name	USG Interiors
Colour	White
Compatible Material	Stone
Container Type	Bag
Country of Publication	USA
Item Form	Powder
Item Package Quantity	1
Item Weight	10 Pounds
Manufacturer	USG
Manufacturer Part Number	HydrostoneTB10lb
Material	stone
Material Type	stone
Model	72194
Other Special Features of the Product	durable
Special Feature	durable
Specific Uses For Product	art
UPC	821079271425
Unit Count	4731.76 Milliliters
Volume	6.25 Gallons
Water Resistance Level	Water Resistant

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¥58506

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In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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