How to Make Fake Glass for a Movie

Written by ehow contributor
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Wonder how special effects artist can make glass that shatters on screen and never injures the cast? It never hurts anyone because it is fake glass. In fact, it's basically just candy as the glass is made mostly of sugar. If this sounds intriguing, read on to learn how to make fake glass for a movie.

Skill level:
Moderately Easy

Things you need

  • One part liquid glucose
  • Two parts water
  • Three-and-a-half parts sugar
  • Old saucepan
  • Stove top
  • Window/glass door mold

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  1. 1

    Create a mold for your glass. Are you making a house window, sliding door, car window or a camera lens? Make the mold for whatever object you need. You can use an old window, lens or other object to pour directly on or construct a mold from scratch with modeling clay, building forms and rubber edging.

  2. 2

    Estimate how much volume you think you'll need to fill so you can determine how much of each ingredient to add. Bring two parts of water to a simmer. Stir in one part liquid glucose and three-and-a-half parts sugar. Bring to a boil.

  3. 3

    Continue to stir as the mixture boils. Allow it to cook until it becomes quite thick and most of the water has been evaporated. Quickly pour the mixture into your mold. Tap the bottom or gently hit the object against an edge or flat surface to even out the top and bring any bubbles up.

  4. 4

    Use your fingers and mixing utensil to smooth out the edges. Then place in a room temperature area to dry. Make sure the place you pick isn't moist. Also, keep the glass form away from direct sunlight as that will warp the form and make the mixture gooey and sticky.

  5. 5

    Gently remove the glass from the form by tapping the back lightly and pushing at the edges lightly as you would with a cake or candy mold. If need be take a small knife to the edges and pry it out slowly. Make sure to use your glass piece within a day or two as it won't stay good for long.

Tips and warnings

  • Make shortly before it's needed, fake glass doesn't stay good long.
  • Don't let the sugar caramelize.

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