Lightweight Hydrocal®* Plaster


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  • Description

    Lightweight Hydrocal Plaster is specially formulated for terrain model builders. At half the weight of Hydrocal Plaster, it goes twice as far.

    Use this tough, quick-setting product to cast rocks or make your own castings. Create hard shell terrain, use as an adhesive to attach or fill in around castings, or strengthen existing terrain.

    Stain with Earth Colors™ Liquid Pigment.

    *Hydrocal is a U.S. Gypsum registered trademark

    • C1201 - Lightweight Hydrocal®* Plaster - 1/2 gal -

      1/2 gal (1.89 L)

      Net wt. 2 lbs (907g)

      Contents settle.

      - $14.99
    • -------------------
  • Made in the USA

    Made In The USA Woodland is committed to a business practice, which supports the economy of our local community.

    We manufacture the vast majority of our products at our Linn Creek, Missouri manufacturing plant, which also houses our product development, package and creative design, marketing, sales and customer service operations.

    Many of the products or parts of the products we manufacture overseas, come back home for packaging and shipping by Woodland employees.

    When you purchase Woodland Quality Brands, you support American manufacturing working in balance with a global economy to support American jobs.

    Safety Warning

    -Model making product. Not a toy! Not suitable for children under 14 years!

    -Produit pour le modélisme. Pas un jouet! Pas adapté aux enfants de moins de 14 ans!

    -Producto para modelismo. No es un juguete! No adecuado para niños menores de 14 años!

    -Modellbauartikel. Kein Spielzeug! Nicht geeigent für Kinder unter 14!


    CAUTION: We do not recommend using Lightweight Hydrocal for body casts as it may irritate skin

    and develop heat sufficient enough to cause burns. Do not take internally.

    MISE EN GARDE: Nous ne recommandons pas d’utiliser ou le Lightweight Hydrocal pour des moulages sur

    le corps car ils peuvent irriter la peau et développent une chaleur suffisante pour causer des

    brûlures. Ne pas ingérer.

    PRECAUCIÓN: No recomendamos el uso de la Lightweight Hydrocal para enyesar ninguna parte del

    cuerpo, ya que pueden irritar la piel y subir la temperatura lo suficiente como para producir

    quemaduras. No ingerir.

    VORSICHT: Wir empfehlen, Lightweight Hydrocal Gips nicht für Gipsabdrücke am Körper zu verwenden,

    da er die Haut reizen und genügend Wärme entwickeln kann, um Verbrennungen zu verursachen. Nicht


    • What is the mix ratio of Lightweight Hydrocal?

      The mix ratio of Lightweight Hydrocal is 5 parts Hydrocal to 2 parts water (1 1/4 cups Hydrocal to 1/2 cup water).

    • My Lightweight Hydrocal is still wet after 40 minutes. The instructions say that it should be dry by now. What am I doing wrong?

      Different issues can affect the setting and drying time of Lightweight Hydrocal®.

      The amount of water used is critical. Use only the amount indicated in the instructions or the Hydrocal will take much longer to cure and set. If too much water is used, it may never set up completely.

      It is very important to shake the carton of Lightweight Hydrocal upside down for 30 seconds to mix contents thoroughly before measuring.

      Humidity is another factor. Higher humidity can extend dry time to as long as a few days. Placing a fan in the room to circulate air can speed up drying time.

      Hydrocal is a U.S. Gypsum registered trademark.


    • Once opened, how long will the plaster products keep? What is the best way to store it?

      When stored properly, plaster products have a very long (years) shelf life as long as they are stored in a way that keeps moisture away from the product.  Put any of our plasters (Hydrocal, Shaper Sheet Plaster, Carving Plaster,  Super Strength Plaster, or Mold-A-Scene) in a sealed plastic bag. Place the sealed bag in a tightly sealed, non-breakable container. This double seal will prevent moisture from interacting with the plaster.

    • Will Lightweight Hydrocal clog a water drain?

      You should not wash any Woodland Scenics plaster product down the drain. This includes Shaper Sheet Plaster, Carving Plaster, Super Strength Plaster, Lightweight Hydrocal Plaster, Mold-A-Scene Plaster, and Smooth-It.

      Plaster residue that remains after applying Plaster Cloth should also be discarded in the trash.

    • My Lightweight Hydrocal will not take the Liquid Pigments in some areas of my terrain?

      Some natural shading should occur when painting your Lightweight Hydrocal surface with Liquid Pigments. However, if the surface is not absorbing pigment and remains white, those areas probably have been contaminated with glue or another substance.

    • Can a Lightweight Hydrocal base be colored with acrylic paint?

      We recommend using our Earth Colors™ Liquid Pigment on Lightweight Hydrocal®* castings. You will want to be sure that there is no glue or other residue on the casting before applying the Pigments, because color may not adhere or may become blotchy.

      *Hydrocal is a U.S. Gypsum registered trademark.

    • What are the metric mixing measurements for your Lightweight Hydrocal?

      Mix 295 mL of Lightweight Hydrocal with 118 mL of water.

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