Silicone food grade beads are very safe and suitable for developing fine motor and sensory skills, understanding the patterns and creativity of newborns. So, let us now discuss how to cast food grade silicone beads.
If your goal is to make silicone product, then please take a different perspective on the current research. The reason why the silicone mold works is because the silicone hardly sticks to anything except silicone. If you use silicone as a base to create molds, pouring food inside means you can pour the food out without sticking your hands.
The step-by-step method is as follows:
Create a modeling clay foundation and level it out as carefully as possible.
Insert the bead into the midpoint of the base to ensure that the direction of the through hole is vertical.
It can also be embedded in various positions of the base across the bed alignment point. These points can be bumps of clay, pyramids, cones, and cones that are easy to release. The conical depression will also be good.
Coat the surface of the silicone teething beads and clay with a release agent.
Wrap the clay bed in a suitable box structure to create a pouring frame.
Select the desired resin and fill it to cover the beads and alignment points.
After curing, remove the clay bed, but leave it in place or wash and replace the beads.
Clean the release agent and apply it to the cured mold and beads.
Create a new casting frame around the cured mold.
Pour into the back half of the mold and allow it to cure as before.
When the mold is separated and cleaned, any organosilicon compound applied will form beads. Without cutting gates or vents, a mold can be filled with silicone and cured. Do not touch the cured surface. Fill the other half of the mold with silicone and place the first half on top of it.
The uncured silicone will bond with the previous casting compound and form beads. Depending on the amount of silicone used, the seam may be thicker.
I don't think that molds with gates and vents can be used to make silicone beads. Since the spherical shape of the beads requires a two-part mold to release the beads, it is more practical to consider the creation of seam patterns.
The tricky part will involve making sure that the clay bed fills the bead opening when it is pressed into place in an earlier step. It is also important to clean the clay from these openings when creating the second mold. Any failure point in these items will form a solder bead without a through hole.
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Post time: Aug-13-2021