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🌱 mold star 15 silicone rubber for slow moldmaking - trial unit logo

🌱 Mold Star 15 Silicone Rubber for Slow Moldmaking - Trial Unit Review

8

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Very good

Revainrating 4.5 out of 5  
Rating 
4.3
🗿 Sculpture Supplies, 🧶 Crafting

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Details

BrandSmooth
ColorMold Star 15 Liquid Rubber
Item Weight1 Pounds

Description of 🌱 Mold Star 15 Silicone Rubber for Slow Moldmaking - Trial Unit

Tear Resistant - Mold Star silicones cure to soft, strong rubbers which are tear resistant and exhibit very low long term shrinkage *Packaging may vary*. Heat Resistant - Cured Mold Star rubber is heat resistant up to 450°F (232°C) and is suitable for casting low-temperature melt metal alloys. Curing - Allow Mold Star 15 SLOW silicone rubber to cure for 4 hours at room temperature (73°F/23°C) before demolding. Vacuum Degassing - Although not necessary, vacuum degassing helps eliminate any entrapped air in pourable silicone rubber. Mold Performance - The physical life of the mold depends on how you use it (materials cast, frequency, etc.). Casting abrasive materials such as concrete can quickly erode mold detail, while casting non-abrasive materials (wax) will not affect mold detail. Before storing, the mold should be cleaned with a soap solution and wiped fully dry. Two part (or more) molds should be assembled. Molds should be stored on a level surface in a cool, dry environment

Reviews

Global ratings 8
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    6
  • 4
    1
  • 3
    0
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  • 1
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Type of review

Revainrating 5 out of 5

Wrong mold material

This is the second time I've ordered Mold Star 15 from Amazon and both times I've received Dragon Skin Fx Pro. I'm trying to fill out a form that I ran out of materials when filling it out. I can't use Dragon Skin when I started Mold Star 15. I'm afraid to place another order if I keep getting the wrong product. In fact, there are 2 different labels on the packaging. Very deceptive. It's not "value for money" if you get the wrong product

Pros
  • Easy to use
Cons
  • Annoyed

Revainrating 1 out of 5

EXPENSIVE!: Crafting

The product works great but be aware if you plan to sculpt something large or multiple items this will not help you at all. I had FOUR items 3 inches high. and 5 very small flat design molds and I've only been able to successfully cast TWO 3" designs and one of my flat designs. Spend a total of $150 to cast these small items in my opinion. smh. It's very handy and Beginner-friendly but EXPENSIVE if you plan to mold large or multiple things.

Pros
  • Best in its niche
Cons
  • Expensive

Revainrating 5 out of 5

Remove Bubbles

Follow Instructions. Stir all ingredients before using. After measuring, stir well and mix until a uniform color is obtained. All of this mixing causes a lot of air to get into the product, which eventually shows up as a poor finish. Use some kind of trough when pouring material. Pour the mixture down the shaft slowly and don't use an angle that is too steep. Don't pour a lot of material at once. The trough and slow movement down to the mold vat allow time for the bubbles to dissipate. Some…

Pros
  • Regular Price
Cons
  • Available in White Only

Revainrating 4 out of 5

Only 2/3 filled - pouring and pouring

3 test devices ordered; each bottle in each test unit was only 2/3 full - so basically I paid for three units and got two full test units. Not sure if Smooth-On is skimming the cream or the seller, but I'm not happy (in seller's defense, the foil seals on all bottles appeared to be intact). They came in white bottles and I'm used to yellow/blue ones (it's been a while since I last used MoldStar 15 Slow); but the bottles still have a tight neck meaning you lose a few ounces as you can't clean…

Pros
  • So far I like everything
Cons
  • For pensioners

Revainrating 5 out of 5

Makes great shapes but very expensive!

I bought this trial kit to play around with pouring concrete, after 3D printing, sanding and finishing a master mold of a small planter I built a mold, glued the part and poured the right amount (about 2 /3 of this trial set) and then fill out the form. The mold has turned out fantastic and I've already poured about 10 concrete pots out of it and they all look great, the product works. as expected and I am very happy with the result. My only complaint is the price, after searching the internet…

Pros
  • Trial period for one year
Cons
  • Frequency

Revainrating 5 out of 5

Great product, great way to test ideas without a big expense!

These are great kits for beginners and intermediate riders. If you need a small quantity to test, this is the perfect way to buy. I particularly like the slow cure time of this silicone as I don't have to use a pressure vessel or degasser to rid the mold of air bubbles. I just tapped the sides of the acrylic mold for about a minute and let it cure overnight (normal curing time is 4 hours). The next morning I removed the original plasticine scalp and the result was a perfect silicone mold. I…

Pros
  • Large selection
Cons
  • Zero

Revainrating 5 out of 5

Easy and fun!

I want to start by saying I didn't have enough to fully cover my sculpture. Mixing the two parts was very easy. I secured my sculpture in the box and slowly poured it to the side and then realized I didn't have enough product so I took out my sculpture with my bare hands and put it in another container and poured the silicone mixture into the new container, to make a bit of a mess of myself that was surprisingly easy to clean up. I saw tons of air bubbles and thought my design was lost, but I…

Pros
  • Vacuum Degassing - While not required, vacuum degassing helps eliminate trapped air in the liquid silicone rubber
Cons
  • No Instructions

Revainrating 5 out of 5

A good choice for everyone but especially beginners

I have tried many mold silicones from several brands and so far that this is my favorite for several reasons.1. Long pot life means there is enough time to mix and pour before everything starts to thicken. If you start making your own molds like I did, you'll find dozens of ways to mix things up. Good longevity means you have plenty of time to fix it if (or in my case, WHEN) something goes wrong. Silicone is not cheap, so mistakes can be expensive - leeway is good! 2. Relatively quick curing…

Pros
  • Heat Resistant Rubber for Star Tempered Mold Withstands temperatures up to 232°C (450°F) and suitable for low temperature casting of metal alloys
Cons
  • Quick Guide