Cast Stone - Armstrong
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Cast Stone - Armstrong

Cast Stone - Armstrong

Price:
₱90
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  • Description
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Description

  • Water/Plater ratio: 40 ml water to 100 g powder
  • Mixing Time: 60 seconds
  • Vicat Setting Time: 5-12 minutes
  • Expansion at 2 hours < or = to 0.25%
  • Bending Strength: > or = to 80kg/cm2
  • Measure the water: Add the water to a clean rubber mixing bowl. Cool water decreases set time for the stone while warmer water speeds it up. Too much water prolongs set time and reduces strength while too little water makes the mix too thick and decreases the flowability.
  • Measure the powder: Slowly add it to the water, allowing all the particles to become wet and avoid air trapping.
  • Stir and spatulate: Begin stirring with a wide lab spatula. Spatulate thoroughly, pressing the material against the sides of the bowl until all the powder is absorbed. The consistency should be like thick cake batter or creamy peanut butter. The mix should hold its weight on the spatula and not be runny. Avoid vigorous whipping as this can introduce unwanted air bubbles.
  • Vibrate the mix: Place the rubber bowl on a vibrator set to medium. Allow air bubbles to rise to the top and burst. This will take around 30 seconds.
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