How To Make Plastic Sheet Molds

Does anyone have knowledge of melting plastic and retaining its pliability.

How to make plastic sheet molds.

Build a molding box a frame that holds the mold in place that is bigger than the size of your template object. Get the right mold material. Dip the sheets in bowl filled with room temperature water for 1 second. Have a mold ready to use.

The sheets should be wet not dripping with water. As you ll need to put the plastic sheet into the oven this is your size limitation. The mold is a female replica of your original part. Make adjustments appropriate to the specifications of your project.

Remove the excess water by squeezing the sheets over the bowl. Recycling plastic for making the molds for the concrete would make good use of what would otherwise be pollution. On the first day prepare your template object and work space. Cover a flat area with plastic trash bags to avoid mess and spray the plastic with a mold release agent.

Measure the inside of your oven. Releasing the mold from the plastic before it fully cools within 2 3 minutes of forming is also a good idea. Cool plastic is hard plastic. I want to make molds for pouring concrete into.

The first thing you need to have for creating a plastic part is a mold. The best part of rtv is it comes in the form of liquid until you add the required catalyst. The example here is the outside of a mold but it can work inside too. The plastic i have melted so far has set a bit too rigid for casting anything with undercuts.

You need to create your mold with a material called rtv room temperature vulcanizing slicone rubber. Lay the sheets over the mold and up the retaining walls.