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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⭐ Mold your masterpiece with precision and style!

MADE IN THE USA - Proudly manufactured domestically, guaranteeing quality and reliability you can trust.
VERSATILE STAR SHAPE - Unique star-shaped mold base sparks creativity and adds a trendy edge to your casting projects.
PRECISION FLEXIBILITY - 30 Shore A hardness ensures molds that are both flexible and resilient, capturing every detail flawlessly.
TRIAL SIZED CONVENIENCE - Perfectly sized trial unit lets you test quality without commitment—ideal for prototyping and small projects.
PREMIUM SILICONE FORMULA - Crafted with top-tier silicone for long-lasting durability and easy mold release.

Smooth Mold Star 30 is a premium silicone mold making rubber with 30 Shore A hardness, designed for flexible, durable molds. This trial unit (19.1 x 15.2 x 7.6 cm) offers a compact, star-shaped mold base, made in the USA by Smooth-On, perfect for professionals seeking reliable, high-quality mold materials.

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Material	Silicone
Brand	Smooth-On
Item dimensions L x W x H	19.1 x 15.2 x 7.6 Centimeters
Shape	Star
Number of Pieces	1
UPC	751635227415
Country of Origin	USA
Item model number	COMINHKR067156
ASIN	B00ETAY8RI

Smooth Mold Star 30 Silicone Mold Making Rubber - Trial Unit

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