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.

Smooth Cast 300 Liquid Plastic Urethane Casting Resin Trial Unit

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

المساعدة تتبع الطلب

الحساب عربة التسوق

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

المساعدة تتبع الطلب

الحساب عربة التسوق

E£ 14446

Duties & taxes included

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Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Cast fast, finish flawless—join the pros who demand speed and precision!

ULTRA LOW VISCOSITY - Pour effortlessly for bubble-free, bright white castings without vacuum degassing.
RAPID 15 MINUTE CURE - Get flawless, durable castings in a flash—no downtime, just results.
PERFECT 1 1 MIX RATIO - Simplify your workflow with an easy, precise equal-part blend every time.
DURABLE MOISTURE RESISTANT - Craft tough, long-lasting prototypes and props that stand up to wear and solvents.
VERSATILE FINISH READY MATERIAL - Sand, prime, and paint your creations to professional standards with ease.

Smooth Cast® 300 is a professional-grade liquid urethane resin offering ultra-low viscosity for bubble-free, bright white castings. With a rapid 15-minute cure and a simple 1:1 mix ratio, it delivers tough, machinable, and paintable results ideal for prototypes, sculptures, and special effects. Trusted by creatives for its durability and ease of use.

Specifications

ASIN	B004BN7G0E
Best Sellers Rank	1,147,681 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 3,687 in Sculpting Moulding & Casting
Brand	Smooth-On
Compatible Material	Plastic
Customer Reviews	4.7 4.7 out of 5 stars (1,129)
Grit Material Type	Plastic
Grit Number	300
Grit Type	Fine
Item Dimensions	18.8 x 15.2 x 7.9 centimetres
Item Weight	907 g
Manufacturer	Smooth-On, Inc.
Manufacturer Part Number	47641
Material	Urethane
Model Number	47641
Number of Items	1
UPC	751635476417
Unit Count	1.0 count

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E£ 14446

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.