Create Plastic Mold

Home plastic injection molding with an epoxy mold.

Create plastic mold.

Cast your mold with plastic resin wait for it to cure and then remove the mold to reveal your creation. While you can buy them in all sorts of shapes sizes and designs sometimes finding the perfect mold for a custom piece is impossible. You need to create your mold with a material called rtv room temperature vulcanizing slicone rubber. The best part of rtv is it comes in the form of liquid until you add the required.

Silicone molds are favored by casters because they are easy to use and don t require much mold release. If specific color is required add coloring to the mix. I made an epoxy mold of an existing plastic item. Molding plastic is a fun inexpensive way to create unique pieces or replicas of your favorite items.

When that happens you have to make your own. Get the right mold material. Note that the original item must hav. This can be done with a 3d print or a soft prototyping mold.

Most plastic manufacturers create the design in the computer through a 3d imagery or animation software and eventually create a physical 3d model made out of abs plastic. Thermoplastic comes in a wide variety of materials colors finishes and thickness. Based on the part that was molded estimate or measure the amount of plastic resin needed to be mixed here is a 1 1 mix ratio resin. You may purchase a mold or create your own custom molds out of reusable molding materials silicone and or plaster.

Thermoforming is a manufacturing process where a plastic sheet called thermoplastic is heated to a pliable forming temperature formed to a specific shape in a mold and trimmed to create a usable product. Then i was able to make copies of that item using a home plastic injection molding machine this process should work for many different types of items or models. Allow it to fill the mold. Mix liquid plastics in a well ventilated area to reduce the danger of fumes.

To create your own silicone rubber mold for plastic casting complete this 3 day process. The mold is a female replica of your original part. Pour the mixed liquid plastic into the mold at the lowest point. The first thing you need to have for creating a plastic part is a mold.