How To Make Plastic Sheet Molds

Each sheet should be 6 inches longer than the mold.

How to make plastic sheet molds.

Make adjustments appropriate to the specifications of your project. On the first day prepare your template object and work space. The first thing you need to have for creating a plastic part is a mold. Does anyone have knowledge of melting plastic and retaining its pliability.

Have a mold ready to use. Get the right mold material. Cover a flat area with plastic trash bags to avoid mess and spray the plastic with a mold release agent. Recycling plastic for making the molds for the concrete would make good use of what would otherwise be pollution.

I want to make molds for pouring concrete into. The mold is a female replica of your original part. The best part of rtv is it comes in the form of liquid until you add the required catalyst. The plastic i have melted so far has set a bit too rigid for casting anything with undercuts.

Layer the sheets on top of eachother. Dip the sheets in bowl filled with room temperature water for 1 second. Releasing the mold from the plastic before it fully cools within 2 3 minutes of forming is also a good idea. You need to create your mold with a material called rtv room temperature vulcanizing slicone rubber.

As you ll need to put the plastic sheet into the oven this is your size limitation. Measure the inside of your oven. The example here is the outside of a mold but it can work inside too. Cool plastic is hard plastic.

Lay the sheets over the mold and up the retaining walls. Once your part is formed it has to be shaped.