August 3, 2017 | Prototype Casting

How We Use Rubber Plaster Mold in Our Metal Casting Process

When you are looking for a short run of pieces or a few prototypes done in aluminum, rubber plaster mold casting is a great metal casting option. This is a process that our team is very familiar with and one of the seven metal casting methods we use. This is the preferred method to use when you plan on using die cast pieces but need an inexpensive prototype to test and refine. The turnaround time on rubber plaster mold metal casting is relatively quick, too, so you’ll be able to get the pieces you need in a short amount of time depending on their complexity and how many you need.

Making a Rubber Plaster Mold

To make a rubber plaster mold, we start with plaster of paris and add ingredients to make the plaster more durable and easier for our metalworkers to work with during the metal casting process. We pour this mixture over the piece, making sure to shake or stir out any air bubbles that might be trapped that can cause problems later on. We then set it, bake it, and dry it before it’s used in the metal casting process.

Rubber Plaster Molds are Versatile

Our rubber plaster mold metal casting allows us to use the mold for hundreds of pieces without the mold degrading. This makes it even more cost effective because it reduces the labor for our team. If you have a small run of pieces that need a high level of detail in a metal with a low melting point, this could be the right metal casting method for you. Give us a call to learn more about this process and the others used in our metal casting facility.