if I form a cylinder 1.25" x 10" long, if it is only supported at the end, will it remain straight, without drooping, for at least 30 seconds?

The clay's rigidity is dependent on temperature. It will need to be warm (90F/32C) to shape, but will slump, unless you wait for the clay to cool (70F/21C). You could use an armature wire to to prevent slumping while warm, or cool by spraying "dust-off" holding the can upside-down. It is a very hard clay though, and will hold its shape better than other oil clays.

Can I use this to shape a cars interier and exterior, will it hold up?

Only to make a mold of it. The hard clay you have to beat in a crockpot to be able to work with it. It is temperature sensitive as it will turn into a liquid so it becomes mallible.would suggest sculpting then making a silicone mold using something like moldmax brush on the fiber resin inside the mold

The title says this is oil-based, but other sites say it is wax based, which one is correct?

It's a mixture of both, but when finally working with it you'll notice it's more wax based...

I could use a hairdryer to help smooth things out as i sculpt?

Yes to maintain it at managable state. That way it can extend your sculpting time and to correct any part of your sculpture if needed...

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NSP Hard - 2 Lbs. Professional Oil Based Sulfur Free Sculpting Clay - Brown

Product ID: 16501770

Details

Age Range (Description)
Adult
Brand
Chavant
Color
Brown
Educational Objective
Creative Skill
Included Components
Clay Knife
Item Weight
2 pounds

🔥Heat-meltable for custom pliability

⚙️2 lbs professional-grade sculpting clay

🛡️Sulfur-free, silicone-compatible formula

R1358

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Description

🎨 Sculpt like a pro, create without limits!

REUSABLE MELTABLE - Heat to soften, sculpt, then reuse endlessly—eco-smart and cost-effective
NON DRYING DURABILITY - Stay creative longer with a clay that never cracks or hardens
PRECISION SCULPTING POWER - Hardest oil-based clay for ultra-fine detail work
SILICONE LATEX FRIENDLY - Safe for direct use with silicone molds—no sulfur, no compromise
PROFESSIONALS TRUSTED CHOICE - Preferred by top artists for its silky smooth texture and lasting performance

Chavant NSP Hard is a 2-pound, brown, oil-based sculpting clay designed for professional artists seeking high-detail, durable, and reusable modeling material. Its sulfur-free formula ensures compatibility with silicone and latex molds, while its non-drying nature keeps your work pliable and fresh. Heat-meltable and reusable, this clay offers a premium sculpting experience favored by experts for precision and longevity.

Specifications

ASIN	B00YNY4R2G
Age Range Description	Adult
Best Sellers Rank	#67,009 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #295 in Pottery & Modeling Clays
Brand Name	Chavant
Color	Brown
Customer Reviews	4.4 4.4 out of 5 stars (151)
Educational Objective	Creative Skill, Dexterity, Hand-Eye Coordination
Included Components	Clay Knife
Item Dimensions	5.71 x 2.91 x 2.64 inches
Item Weight	2 pounds
Manufacturer	Chavant
Manufacturer Part Number	ChavantNSPHARD2lb
Material Type	Clay
Model Name	Chavant NSP Hard
Model Number	ChavantNSPHARD2lb
Number of Items	1
Other Special Features of the Product	Non Drying
Recommended Uses For Product	Modeling,Sculpting
Unit Count	32 Ounce

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R1358

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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