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Plastermix Plaster of Paris Casting Material - Arctic White

From $4.99

Availability: In Stock
Brand: Sandtastik
Product Code: PLMX010, PLM050, PLM100

Available Options

* PLASTERMIX Size Options:

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Sandtastik® Plastermix Plaster of Paris Casting Material

A specially formulated art supply grade plaster, Sandtastik® PLASTERMIX Plaster of Paris Casting Material is activated by using 2 parts casting material to 1 part cold water. Sandtastik® PLASTERMIX Plaster of Paris Casting Material is great for general purpose arts and crafts, casting with plastic molds or in sand. 

Popular uses include art classes, parties, classroom projects, day and summer camps, and for home use. Check ‘How To Use Plaster’ section below for instructions and best practices.  


Hardening / Drying Times

Recommended hardening, setting or drying times for Sandtastik® PLASTERMIX Plaster of Paris Casting Material varies by thickness of your poured casting and water temperature (cold = longer, warm = shorter). As a general guideline, please follow these time allowances:

  • For smaller moldings, less than 1” thick, allow 20 - 30 minutes.
  • For larger moldings, more than 1” thick, allow 45 – 60 minutes



Color:   Arctic White
Packaging:   1 kg (2.2 lb) Bag, 5 lb (2.3 kg) Resealable Pouch, 10 kg (22 lb) Bag
Ages:   4+   (adult supervision)
Certif:   ACMI 'AP' Non-toxic
Conforms to ASTM D-4236


How To Use PLASTERMIX Plaster of Paris Casting Material


1. Measure 1 part Sandtastik® PLASTERMIX Plaster of Paris Casting Material to ½ part water 
      NOTE:  Using warm water will accelerate material hardening.  It is recommended to use cold water to allow for adequate setup.
2. Stir contents until you obtain a smooth consistency.
3. Pour into desired mold.
4. Let dry approx. 45-60 minutes. Drying times will vary for large castings.
5. Remove casting from mold.
6. Ready to decorate.

Frequently Asked Questions

Initially the mixture will seem quite watery when mixed at a ratio of 2 parts plaster to 1 part water. As Sandtastik® PLASTERMIX Plaster of Paris Casting Material begins to react and temperature starts to climb, it will slowly become thicker and thicker until finally solidifying. Remember to use cold water to allow for a greater drying time.



When mixed with water, this material hardens and produces heat quickly. DO NOT attempt to make a cast enclosing any part of the body using this material. Dust from mixing may cause irritation to eyes, skin, nose, throat and upper respiratory tract Use only in a well-ventilated area. It is recommended to wear face and eye protection. If eye contact occurs flush thoroughly with water for 15 minutes. If on skin wash with plenty of water If swallowed and/or irritation persists, call physician.

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