There are three methods for making silicone molds: perfusion molds, brush molds, and split molds. According to the structure, size, and complexity of the product, a suitable operation process is selected for mold opening. For example, we make some small crafts to play by ourselves. It is relatively easy to learn by pouring and brushing. How do we do this? The following editors are here for you.

Preparation materials: master mold (physical product to be made), brush, stirring rod, mold release agent (Vaseline), cotton cloth, glass plate, mold silicone, wood (wooden board), small vacuum machine One, nothing is fine).

Operation method of perfusion mold:

1. Clean the master mold and spray a layer of release agent (Vaseline). If it is smooth, you need to use a clean pure cotton cloth and apply Vaseline evenly on the mold. After the mold has fully absorbed Vaseline (Approximately 30 minutes), the mold is cleaned with a clean cotton cloth, which requires smooth and translucent. If it is a textured product, apply Vaseline directly to the mold.

2. Use a wooden board (wood block) to form a regular range, make an outer mold, and fix the mold within the regular range. Make sure that there is no gap in the outer mold to prevent the silicone from overflowing.

3. After the above work is ready, start to match the silica gel. According to the size of the product, according to 100: 2 ~ 3 (condensation type silica gel ratio), weigh a certain amount of silica gel and curing agent, mix and stir uniformly, and use a vacuum pump to perform a vacuuming and air bubble treatment. Reduce the amount of curing agent added and extend the curing time, so that the remaining air bubbles in the silica gel can be eliminated naturally, but this effect is not very good!). Note: Vacuum down to -0.01Mpa for 7-8 seconds! Too long evacuation time will cause cross-linking reaction of silica gel when evacuation.

4. Slowly pour the vacuumed silica gel into the mold frame along the top of the mold, and let the silicone flow naturally into each part of the mold. Use the oil paintbrush to brush in place.

5. After the operation is completed, wait for the silica gel to completely solidify. Generally, the mold release can be performed within 6-12 hours.

Brush mold operation method:

1. Clean the master mold, use a clean cotton cloth with petroleum jelly and apply it evenly on the mold, and then fix it on the glass plate.

2. According to the size of the product, according to 100: 2 ~ 3 (condensation type silica gel ratio), weigh a certain amount of silica gel and curing agent, mix and stir uniformly, and use a vacuum machine to perform a vacuuming and air bubble treatment. You can extend the curing time by reducing the amount of curing agent added, because the remaining air bubbles in the silica gel can be naturally eliminated, but this effect is not very good!). Note: Vacuum down to -0.01Mpa for 7-8 seconds! Too long evacuation time will cause cross-linking reaction of silica gel when evacuation.

3. Brush the silicone rubber with a good proportion evenly on the surface of the mold. Generally, it needs to be brushed several times, depending on the size of the product. Wait for about 30 minutes after the first brush, and then brush the silicone for a second time after curing. Generally, 3-4 brushes are sufficient.

4. After the silica gel is completely cured, it is ok to remove the outer mold directly from the mold!