How do the vacuum formers work?

Before vacuum forming you must prepare the shape that you are forming around. These are also known are moulds or tools. This can be a pre-existing object or an object you have made. Either way the material it is made from needs to be strong. It must withstand the heat and pressure of the vacuum former.

Moulds should not be square or have negative angles. These will make extremely difficult to remove the formed plastic in one piece. A draft angle of 1 or 2 degrees will make it easier to removed the formed plastic. The surface of the mould should be as smooth as possible.

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