i wouldn't eat it....or anything out of it....

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Smooth-On Smooth-Cast 325 1.9lb Kit

Q: What filler do I add to simulate the density of wood?

Our Ure-Fil 5 is a popular choice for this.

Q: I want to make trumpet mouth pieces that are softer than the actual brass ones. Will this work for my intention? Will this include all that I need?

You could make a mouth piece with it, but whether the chemicals are safe for humans is a different story. The people at Smooth-on are available everyday to give information on the safety and life of their products. Go to the web site and give them a call. There is much to be learned, and they have the place to do it.

Q: i want to make glow in the dark jewellery with glow worm powder. i want solid form not the rubber type. so which is best for me smooth cast 325 or 300

both products cure into solid form. 300 cures white, 325 cures clear. keep in mind that glow worm powder makes both cloudy. and if you use pigment, 300 is more pastel.

Product ID: 1871291

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Details

Brand
Smooth-On
Specific Uses For Product
Craft Art
Material
Urethane Resin
Item Form
Liquid
Special Feature
Fast Drying

⏳3 min pot life

🔄1:1 mix ratio

🕒10 min cure time

Frequently Bought Together

Smooth-On Smooth-Cast 325 - Ultra Low Viscosity Liquid Plastic Resin - Clear Amber - Pint Unit

Smooth-On Mold Star™ 16 Fast Platinum Silicone Rubber, Silicone Mold Making Kit - Pint Unit

LEGO Classic Creative Suitcase 10713 - Includes Sorting Storage Organizer Case with Fun Colorful Building Bricks, Preschool Learning Toy for Kids, Boys and Girls Ages 4 Years Old and Up

Description

⚡ Cast Like a Pro, Fast & Flawless!

EFFORTLESS MIXING - Simple 1:1 volume ratio means less hassle, more precision.
ULTRA FAST CASTING - Get bubble-free results in just 10 minutes—no vacuum needed!
PERFECT COLOR MATCH - Clear amber resin ensures flawless, color-neutral finishes every time.
TIME SAVING WORKFLOW - 3-minute pot life keeps your process smooth and efficient.
DURABLE SHORE 72 D HARDNESS - Strong, resilient castings built to last through any project.

Smooth-On Smooth-Cast 325 is a low-viscosity, clear amber casting resin designed for quick, bubble-free metal casting molds. With a 3-minute pot life and 10-minute cure time, it offers a 1:1 mix ratio and Shore 72D hardness, delivering durable, color-neutral castings without the need for vacuum degassing.

Have a Question? See What Others Asked

What filler do I add to simulate the density of wood?

I want to make trumpet mouth pieces that are softer than the actual brass ones. Will this work for my intention? Will this include all that I need?

is it food grade ?

i want to make glow in the dark jewellery with glow worm powder. i want solid form not the rubber type. so which is best for me smooth cast 325 or 300

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