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Alginate and Moulage

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  1. BEST BUY LifeMold -- Silica Free Alginate for high quailty mold making

    BEST BUY - LifeMold Silica Free Alginate 3-4 Min Set

    Starting at: $8.95

    One Pound Package. Yields 6-lb. (3.18 Kg.) of Alginate When Mixed with Water -- Translates to $1.50 a Mixed Pound Learn More
  2. algislo -- | alginate softner | bonder | retarder | cleaner

    AlgiSlo - Alginate Miracle - Retarder / Bonder / Softener / Cleaner

    Starting at: $21.95

    4-in-1 Alginate Formula Retarter/Bonder/Softener/Cleaner . When you need those extra minutes. Increase set time for up to 5 minutes or more. Bonds alginate layers. Softens alginate surface so that fiber will adhere. Cleans dried alginate, too. Learn More
  3. Hollywood Impressions SILFREE - 2-3 Min Set

    Hollywood Impressions SILFREE - Fast Set 2-3 Min Set

    Starting at: $15.95

    The healthiest alginate you can use. Developed for our customers by popular request from our ArtMolds' dealers, It's a superior quality Dental Grade alginate with a set time of approximately 2-3 minutes Learn More
  4. MoldGel Alginate SILFREE - Regular Set 4-5 Min Set

    MoldGel Alginate SILFREE - Regular Set 4-5 Min Set

    Starting at: $15.95

    MoldGel SILFREE-RegSet - is silica free and made with food grade ingredients. Our alginate mixes easily into a smooth, creamy consistency providing forensic detail down to the fingerprints. Learn More
  5. MoldGel SILFREE SloSet

    MoldGel Alginate SILFREE - Slo Set 7-8 Min Set

    Starting at: $15.95

    MoldGel Alginate SILFREE-RegSet - is silica free and made with food grade ingredients. Our alginate mixes easily into a smooth, creamy consistency providing forensic detail down to the fingerprints. Learn More
  6. Fibergel Alginate for high strength  mold making

    FiberGel E F/X Grade Alginate - Hi Tear Strength

    Starting at: $17.95

    Formulated for high-end detailed E F/X work. FiberGel alginate is independently tested 40% stronger than the leading brands. Set Time - 5-6 - minutes. Learn More
  7. MoldGel alginate Regular Set - Traditional Formula

    MoldGel Alginate Regular Set 4-5 min Traditional Formula

    Starting at: $12.95

    MoldGel Alginate -Regular Set Traditional Formula - 4-5 Minutes Set - alginate mixes easily into a smooth, creamy consistency providing forensic detail down to the fingerprints. Learn More
  8. MoldGel Alginate - Sloset - Traditional Formula

    MoldGel Alginate SloSet 7-8 min Traditional Formula

    Starting at: $12.95

    MoldGel Alginate -Sloset. Traditional Formula - 7-8 Minutes Set - alginate mixes easily into a smooth, creamy consistency providing forensic detail down to the fingerprints. Learn More
  9. Moulage Reusable Mold Making Material

    Moulage Reusable Mold Making Material

    Starting at: $34.95

    A rubber-like material used for taking impressions from life. Applied warm with a brush or palette knife, captures minute details for a negative mold. May be remelted and used over and over. Learn More
  10. Cape Crystal Sodium Alginate

    Sodium Alginate in Powder Form

    Starting at: $8.95

    Sodium Alginate in Powder Form - Food Grade Thickening Agent - For Chefs and Cooks - Organic and 100% Natural - Available in 2 / 8 / 16 oz Learn More

Alginate Origins

Today's life casting alginates evolved from dental formulations known as dental impression material. In fact the alginate definition is usually referred to as impression material in dentistry. However alginates are also widely used in the medical field for dressings and wound care and also in the food industry as a food supplement. Read more about it on Wikepedia.

Alginate Formulation

Alginate used in life casting and mold making is distinguished by slower setting times compared to dental formulas. Most  formulas consist of a raw material known as sodium alginate which is derived from seaweed, specifically dried kelp  (Read how alginate it is used and is made). It is then combined with other materials to make a gel-like substance when mixed with water. However, calcium and potassium alginate salts are also used as raw materials in specialized formulas. 

Two Groups 

EnvironMolds produces two groups of impression materials formulated for skin-safe casting. 

The first group  is a silica-free formula which is both environmentally and user friendly. This family has a softer set, which is ideal for casting babies and small children as it is very gentle on the model. The silica-free formula  provides a much greater coverage as its mix ratio is 1-part powder to 7-parts water, (compared to traditional formulas using 1 part powder to 3-parts water) making it the most economical alginate formula on the market when valued by volume produced.

The second class of alginates is the traditional formula which provides for a firmer set due to its clay fillers. But the traditional  formula has the classic mix ratio of 1-part powder to 3-parts. Thus, it has a lesser coverage by pound than the silica-free family. But its higher strength makes it the better choice for larger molds as they are less apt to tear.

EnvironMolds also offers FiberGel brand which contains fiber in the formula to improve tear strength and to hold moisture which significantly delays shrinkage. This is an excellent alginate formula for larger molds and life castings.

Tips for Use 

These water-based mold making formulas are known as waste molds as they usually only can be used for one, perhaps two castings as the mold shrinks through time as the water evaporates. Thus, you should cast into your  mold within 3-hours for best results. The exception being FiberGel which allows for a twelve hour delay before noticeable shrinking. Read about the effect in the Art Casting Journal.

Moulage 

We also offer a reusable impression material known as Moulage. It is also skin-safe, but is heated to melt it and then applied to the subject. After use, moulage can be remelted and reused.

More Information

For more information on selecting the correct alginate product and the correct amounts please read the Selection Table.

Important: please read this article on the effects of hard water before using any of the alginate products. The use of hard water can ruin your mold making mix. Its symptoms are a mixture that will not mix smoothly. It often appears to look a little like as cottage cheese or oatmeal.