A layer of silicone mold putty will form 1 of the mold s inner walls.
How to mold plastic sheets at home.
Place the two halves together leaving a hole in the top where the plastic will be poured.
Heat for approximately five minutes.
Preheat the oven to 250 degrees f.
Place a plexiglass sheet on large pan and place on the middle oven rack.
The first thing you need to have for creating a plastic part is a mold.
Cover the master item s exposed half with silicone mold putty.
Get the right mold material.
Attach your vacuum cleaner hose to the attachment on the side of the plywood box.
Apply a layer of mold putty to the exposed half of the master item.
As you ll need to put the plastic sheet into the oven this is your size limitation.
To make your own molds try forming clay around one half of an object then the other half.
You can also buy molds at craft stores but for best results choose a mold that is lined with aluminum.
Apply mold putty to the clay bed s surface carefully covering the alignment keys.
Put some coins under the edges of the form to allow the air to flow freely between the form and the pegboard.
Coat the master part with a release agent.
Molding the plastic place your form in the center of the pegboard on top of the plywood box.
Make adjustments appropriate to the specifications of your project.
The large pan prevents the plexiglass from coming into contact with the hot rack which can distort the plexiglass due to uneven heating.
You need to have one master part for making the mold.
Have a mold ready to use.
The example here is the outside of a mold but it can work inside too.
And if you really want to give it a try then the following five steps are all you have to perform.