Mold making and Casting products through EnvironMolds, LLC

EnvironMolds provides access to a complete array of products for making various types of molds.

Clay may seem like a simple material but the high-quality, oil-based plasticine variant proves to be excellent for making molds, sculptures, masks, animation figures and even special effects. Then there are carving and casting waxes that are especially suitable for making candles and soaps.


If you are interested in capturing the shape of the human body for life casting, just turn towards the skin-safe alginates section. There is a silica-free formulation for use on babies and enhanced alginates for larger molds. Even plaster bandages can be used to make form molds from the body or other objects that do not have many details. The same bandages are also useful for reinforcing alginate molds.



Polyurethane rubbers are an exceptional mold making system especially when tough and durable molds are required, such as for concrete casting. The high quality silicone rubber formulas are suitable for any kind of application. Silicone rubber options are available for making food molds, translucent skin surfaces and even for making body molds. Liquid latex rubber is another versatile compound that is economical as well. It is primarily used for creating special effects on artists and for making masks.


Moulage and thermoset mold rubbers need to heated prior to use. The major benefit is that these mold making compounds are reusable by melting.

In case you want to know more about how to make molds, www.artmolds.com also hosts a learning centre with books, DVDs and other learning aids.

Think body molds; think alginates! Indeed, alginate is the material of choice for capturing molds from the live human body as it is completely safe for the skin. This natural organic material sets quickly and the level of detail is also superior.

However, alginate comes with its own set of drawbacks. For instance, alginate can easily tear during demolding. Even if you manage to demold properly, the molds tend to shrink on contact with air as the water evaporates. They will start losing details within a few hours itself and are mostly unusable after 24 hours or so. Therefore, you have to cast them quickly; within an hour or two at best. Again, these are waste molds as you cannot even consider using them for making multiple castings.

Moreover, you cannot cast resins or polyurethanes in alginate molds. They are mostly suitable for plaster casting only.

Another option

Not many people may be aware that silicone rubber can also be used for making body molds! Indeed, skin-safe silicone is available in the market and LifeRite Skin Safe Silicone from the house of EnvironMolds is a good option.

This 2-part RTV silicone rubber is suitable for life casting and can be easily sourced from Artmolds.com. The body molds will turn out tear-resistant and have a long life.

They can be used again and again for making resin, polyurethane or plaster casting, making it possible to replicate multiple copies using the very same mold!

However, I had no clue that this same compound would help provide an antique finish to ceramics! All you have to do is brush a thrown pot with a solution of sodium silicate. The painted surface is then quickly dried before expanding the pot from inside. What happens is that the thin skin of sodium silicate first hardens when dried with a blow torch or heat gun while the clay still stays soft and malleable. The pressure of expansion from inside cracks the skin to give the pot an instant antique look. The glazed surface looks quite authentic.

Alginate is the most commonly used material for making body molds. As it is extracted from seaweed and combined with other harmless substances, alginate can be safely applied on any part of the human body.

In fact, alginate is a natural organic material that is food safe as well. It is used as an ingredient in many food products and is safe to eat. Alginate is also regularly used to capture dental impressions and life casting alginate has evolved from this formula itself. The mold making version is only modified to deliver slower setting times.

All you have to do is mix the alginate powder with water to form a gel like paste. Avoid using hard water for this purpose. The alginate paste can be easily applied on the face, hands, legs, torso or the entire human body too. It will set within a couple of minutes and can be easily demolded by twisting or wriggling the body part.

EnvironMolds provides a range of alginate formulas that capture incredible details and provide an exact reproduction of the body part where it is applied. Apart from the traditional formulas, there is a silica-free version (softer set suitable for babies and small children) and fiber-reinforced version (delayed shrinkage and improved tear strength for larger molds). Check www.artmolds.com/molding-materials/alginate.html for other slower set variations as well.