How to bend plexiglass in an oven

Written by aaron kopf
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How to bend plexiglass in an oven
Plexiglass is often used to replace broken windshields or windows. (old rusty car image by Jeff Clarke from

The chemical name of Plexiglass is polymethyl methacrylate, also knows as methacrylic acid. In 1931, the United States began manufacturing acrylic resin to coat industrial machines and glass binders. Five years later, this resin was formed into a transparent sheet, and the acrylic era began. These acrylic sheets served as a useful bullet-resistant glazing on fighter planes during World War II, as it was light, strong and easily moulded onto the skin of the aircraft. Plexiglass is unrivalled in its ability to withstand the weather and is unmatched by any other plastic glazing. In modern times, Plexiglass is used for skylights, replacement windshields, protecting blast shielding and bulletproof windows.

Skill level:
Moderately Challenging

Things you need

  • Conventional or convection oven
  • Large metal pan
  • Cotton gloves

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  1. 1

    Preheat the oven to 121 degrees C.

  2. 2

    Place Plexiglass sheet on large pan and place on middle oven rack. The large pan prevents the Plexiglass from coming into contact with the hot rack, which can distort the Plexiglass due to uneven heating.

  3. 3

    Heat for approximately five minutes.

  4. 4

    Pull the pan out of the oven with the cotton gloves. The heated Plexiglass is now ready for moulding. Be sure to use gloves and work quickly as the Plexiglass will become less malleable as it cools.

  5. 5

    Place your Plexiglass in the refrigerator to set the shape. This process can be repeated as many times as needed.

Tips and warnings

  • Do not leave the Plexiglass in the oven longer than seven to eight minutes, as this can result in melting. You only wish to soften the Plexiglass with heat.

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