How to make strong, durable concrete mix for your silicone mold
Mad Molds . Mar 15, 2021
BASIC PROPORTIONS FOR THE SILICONE MOLDS
In this article we will share some guidance on how do we make concrete mix that stays durable. You’ll find the amounts of raw material that you’ll need for the mix. Remember that the measurements are approximate, with practice, you’ll learn how to calculate the exact measurements of each material. It’s important that the mix be homogeneous, peanut butter consistence mix.
BASIC PROPORTIONS FOR THE SILICONE MOLDS:
- 1 part portland cement
- 0.5 part quartz sand, silica sand or sifted river sand (0 - 2 fraction)
- 0.5 part quartz sand, silica sand or sifted river sand (0,1 - 0,5 fraction)
- 0.5 hand full of polypropylene fiber
- fibreglass mesh (optional) for thin tray silicone molds.
- 200ml. of water, taking the climate and desired texture into the mix to be like peanut-butter constancy .
BASIC TOOLS FOR MIXING:
- Plastic box or bucket
- Regular spoon or trowel
- Clean reusable liter jars
- Funnel for pouring the mix
With a liter jar, pour the cement, sand and mix it dry using your trowel. Once the mix is mixed well, add water and keep mixing. At the end add the polypropylene fiber.
Remember that using as little water as possible is best, which is why we recommend going slowly, until you reach a half a liter. If you need more to put it in your mold easily, do it as little as possible.