whats the difference between oomo 30 and moldstar ?

OOMOO 30 has a Shore hardness rating of 00-30, which is about as squishy as a gel shoe insert. Moldstar 30 is a hardness of Shore A-30, which is closer to pencil eraser hardness. It’s confusing, but there are 2 Shore hardness scales and a 30 on one is very different from a 30 on the other. In the description when it talks about hardness, pay attention to whether it says Shore A or Shore 00.

What color is this silicone? Can I use mica powders to color it

It is blue when mixed, and very opaque, so I doubt powders will be able to color it much if at all. If you're looking to label your molds, I've 3D printed mirrored text using a raft, and set it into the mixed material. It floats, and pulls away cleanly once the material is cured. If you want a platinum cure 2 part silicone around shore-A 30 you can color, I might suggest DragonSkin 30 or Platsil Gel-25.

Hi. i've made a wax mold of a small animal bone using this silicone method. i'm curious if i can use clay as well. i'm looking to make jewelry..

On Smooth On's website it states that this line of mold will not work with modeling clays that contain sulfur. Their website was very helpful and has lots of information: http://www.smooth-on.com/Silicone-Rubber-an/c2_1115_1341/index.html

No. Smooth On does however make a food safe silicone called Smooth -Sil 940

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Smooth Mold Star 30 Silicone Mold Making Rubber - Trial Unit

Product ID: 216303495

Details

Brand
Smooth-On
Item dimensions L x W x H
19.1 x 15.2 x
Material
Silicone
Number of Pieces
1
Shape
Star

⏳30 min pot life - stress-free molding

🎨Ultra-fine detail capture - flawless textures

🛡️High tear strength - durable & flexible

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Description

✨ Mold your masterpiece, not your stress! ✨

COMPACT TRIAL UNIT - Perfect size to test your next big idea without commitment.
MESS PROOF MASTERY - Minimal bubbles and easy demolding save time and frustration.
EFFORTLESS PRECISION - Captures every intricate detail with professional-grade silicone clarity.
BEGINNER FRIENDLY FORMULA - Easy mix ratio and long working time let you create without the panic.
DURABILITY MEETS FLEXIBILITY - Strong yet flexible molds that survive your creative chaos.

Smooth Mold Star 30 is a premium silicone mold-making rubber designed for both beginners and pros. With a 30-minute pot life, high tear strength, and exceptional detail reproduction, it delivers flexible, durable molds that simplify your creative process. This trial unit offers a perfect introduction to professional-grade molding with minimal bubbles and easy demolding, making it ideal for decorative casting and intricate projects.

Specifications

ASIN	B00ETAY8RI
Best Sellers Rank	#634,083 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #167 in Sculpture Modeling Compounds #1,016 in Sculpture Molding & Casting Products #2,743 in Candy Making Supplies
Brand Name	Smooth-On
Country of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (708)
Item Dimensions	19.1 x 15.2 x 7.6 Centimeters
Item Weight	2.47 Pounds
Manufacturer Part Number	moldstar30
Material Type	Silicone
Model number	COMINHKR067156
Number Of Items	1
Number of Pieces	1
Shape	Star
UPC	751635227415

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3453 Kč

Duties & taxes included

In stock

Sold byAmazon Czech RepublicDelivered 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 Czech Republic.

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TrustScore 4.5 | 7,300+ reviews

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