Can I add glitter to this?

I've used 325 with glitter pigments, and it works very well. You'll have to add a decent amount of glitter and it will take longer to cure.

Can I use this to cast a dome-shaped mask using a silicone mold? Will it stay liquid long enough for me to tilt it back & forth to form an even coat?

Smooth-Cast 300 is a snap cure material - a better choice may be Smooth-Cast 325 or Smooth-Cast 65D, both of which have a gradual cure profile.

Yeah, to an extent. I’ve taken a dremle tool to casted plastic to sand down parts and remove unwanted flashing that occurs. It’s pretty tough stuff, let it cure for a day or two before sanding or working on thinner areas, but I’ve even taken a hacksaw to some castings and they have held up just fine.

Is this a silicone or a urethane?

This is a urethane casting resin.

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Smooth-Cast 300, Bright White, Ultra Low Viscosity Liquid, Gallon Unit

Product ID: 45788979

⚡Ultra-low viscosity for effortless flow

⏱️Fast 10-minute cure time

🛡️Durable, moisture & solvent resistant

3674 DH

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Description

⚡ Cast Brighter, Cure Faster, Create Stronger!

BUILT TO LAST - Fully cured castings are tough, machinable, paintable, and resist moisture and mild solvents.
MIX WITH CONFIDENCE - Convenient 1A:1B mix ratio simplifies preparation, minimizing waste and errors.
PRO GRADE VERSATILITY - Ideal for complex molds with negative curves; easy cleanup with simple alcohol solutions.
SPEED MEETS PERFORMANCE - Rapid 10-minute cure time accelerates your project turnaround without compromising strength.
EFFORTLESS PRECISION CASTING - Ultra-low viscosity ensures bubble-free, bright white castings without vacuum degassing.

Smooth-Cast 300 is a professional-grade, ultra-low viscosity liquid resin designed for bright white, virtually bubble-free castings. With a fast 10-minute cure time and a simple 1:1 mix ratio, it delivers tough, durable, and moisture-resistant results ideal for detailed molds and rapid prototyping.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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3674 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered 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 Morocco.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Best Sellers Rank	#13,436 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #117 in Sculpture Molding & Casting Products
Customer Reviews	4.7 out of 5 stars 1,319 Reviews

Smooth-Cast 300, Bright White, Ultra Low Viscosity Liquid, Gallon Unit

Description

Specifications

Common Questions