We tested all the above materials by each one of us and went through their safety data sheets which consists of it's density, mixing ratiio, cure time, etc. We used all different molding and casting materials available at our Sanjivani Fab Lab. We made their test casts and observed proportion, mixing methods and curing time for each one of the materials. We also learned which material can be used as a molding material and whichh one as casting material. Some of them can be used as both molding and casting materials.<br>
Ecoflex rubbers are platinum catalysed silicones that are versatile and easy to use. Ecoflex rubbers are mixed in the ratio of <b>1A:1B</b> by weight or volume and cured at room temperature with negligible shrinkage. Ecoflex rubbers are versatile materials, perfect for a wide range of applications, from crafting prosthetic limbs to creating realistic special effects in movies. Mixing them is straightforward—just combine equal amounts of two components, and you're ready to pour. Once cured, the resulting rubber is remarkably soft, yet incredibly strong and stretchy, making it ideal for various uses. You can even add pigments to create custom colors for your projects. However, it's crucial to work safely, ensuring proper ventilation and wearing protective gear like gloves and glasses. After pouring the mixture onto your chosen surface, allow it to cure at room temperature before demolding. For the best results, clean your mold thoroughly before storing it in a cool, dry place. With these simple steps, you can unleash your creativity and bring your ideas to life with Ecoflex rubbers.<br>
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<b>Measuring and Mixing</b> : Mix Parts A and B thoroughly for 3 minutes, then vacuum degas to eliminate entrapped air.<br>
<b>Pouring and Curing</b> : Pour mixture uniformly, ensuring at least 1/2” coverage over the highest point of the model. Cure at room temperature before demolding, with optional post-curing for maximum properties.<br>
<b>Mold Performance and Storage</b> : Mold life depends on usage and materials cast. Clean and dry molds before storage in a cool, dry environment.<br>
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<b>RTV2 Silicone rubber - 15C whitev</b><br>
15C White is a poly-condensation curing, two-component silicone that vulcanizes at room temperature. It has low shore A hardness, high tear strength and low dimensionnal variation. It is generally used foor applications like general mouldmaking and construction mouldmaking.
Before the casting of Epoxy, Polyester and PU resins on the silicone please apply a release
agent to protect the silicone mould. If the resin is aggressive, apply it for each
casting.
If you are using this silicone with a particular resin for the first-time, please do a small test
so it does not compromise the work.
Take the two bi-component products and shake before use in order to homogenize each
component prior to mixing. BASE component is white, CATALYST component is transparent/
yellowish.<br>
Mixing ratio must be <b>100:5</b> (5 units of CATALYST for every 100 units of BASE). For example,
for 1 kg of base, add 50 g of catalyst. This ratio must be respected to ensure the final char-
acteristics of the product. DO NOT exceed the recommended ratio for the catalyst. You can
use less catalyst (3-4%) than the recommended ratio (5%), in this case the dimensional
change will be lower but setting time will increase. The hardness is reached after a few hours (see table) and if the correct percentage of
catalyst is respected. After 24 hours the product is cured. After 72 hours,
perfectly hardened.
Mix vigorously until the mixed white color is homogeneous. Once the product is completely
mixed, it is ready to be poured and it is recommended to pour the silicone from a height of
30 cm into the mold.
Complete curing takes about 72 hours after mixing the two components.
