Can i use with plastic? or do i need a release agent?

Urethane foams are adhesive and will stick / bond to many surfaces. We recommend Ease Release™ 2831 to release urethane foam from most surfaces. If the release application is particularly difficult (example; releasing urethane foam from urethane rubber), we recommend an application of Universal Mold Release™ followed by an application of Ease Release™ 2831. WARNING; Do not use Universal Mold Release by itself, or any other silicone based release agents. This will collapse the foam. You MUST perform a small scale test to determine if the release agent you use will work properly with the plastic you are casting against.

Would this work well for filling a plaster body cast intended to make a dress form for sewing?

I thinking would. It is pretty "squishy " so if that's okay with you then I think it would work well.

Hi, do you also have smooth on flex foamV or 6?

I am not Amazon and I have not worked with 6 (Pillow soft) but I have a sample of it. The Smooth-On web site says they make sample kits for both products and they are both similar to 3 in that they are measured by volume. The big difference is that they expand less.

What is the Shore hardness of the resultant foam?

I could not find a Shore Hardness for the Foam (and yes, I know what I was looking for) but since it is their most expansive foam I imagine the number to be quite low. I am not even Shore Hardness applies to foams.

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FlexFoam-iT! III - Flexible Polyurethane Foam - Gallon Unit

Product ID: 448590754

Details

Brand
Smooth-On
Item Form
Foam Liquid
Material
Polyurethane
Special Feature
15 times
Specific Uses For Product
Art Carpentry

⏳2-hour full cure time

🔄15x volume expansion

⚖️1:2 precise mix ratio

COP 2062802

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

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Description

🛠️ Flex your creativity with foam that expands your possibilities!

RAPID 2 HOUR CURE - Get your projects ready fast without the wait.
MASSIVE 15 X EXPANSION - Transform a small mix into a large, flexible foam masterpiece.
VERSATILE CREATIVE USE - Ideal for propmaking, special effects, squishies, and custom crafts.
PRECISION 1 2 MIX RATIO - Achieve perfect consistency every time with easy volume measuring.
PRO LEVEL SAFETY HANDLING - Designed for professionals with clear safety guidelines and ventilation needs.

FlexFoam-iT! III is a professional-grade flexible polyurethane foam that cures to a soft white foam in just 2 hours. With a remarkable 15 times expansion and a simple 1:2 volume mix ratio, it’s perfect for propmaking, special effects, and custom squishy creations. Trusted by thousands of crafters and professionals, this gallon unit delivers consistent, high-quality results when used with proper safety precautions.

Specifications

ASIN	B0B2X4FVPT
Best Sellers Rank	#29,661 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #1,175 in Craft Foam #1,454 in Sewing Pillow Forms & Foam
Brand Name	Smooth-On
Color	White
Compatible Material	Vinyl
Container Type	Can
Customer Reviews	4.6 4.6 out of 5 stars (722)
Full Cure Time	2 Hours
Item Form	Foam, Liquid
Item Package Quantity	1
Manufacturer	Smooth-On, Inc.
Material Type	Polyurethane
Model	FlexFoamItIII
Other Special Features of the Product	15 times expansion
Part Number	FlexFoamItIII
Specific Uses For Product	Art, Carpentry, Fabric, Furniture, Woodworking
UPC	751635446618
Unit Count	1.0 Count
Viscosity Level	Medium
Volume	277.42 Fluid Ounces
Water Resistance Level	Not Water Resistant

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

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.

2 weeks ago

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COP 2062802

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered 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 Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

View all Trustpilot reviews