Is Perfect Cast the Same as Plaster of Paris?

While shopping for the right plaster to use for your project, you might come across the perfect cast and wonder if it is the same as plaster of Paris. Plaster is a common material that is used in casting, molding, construction, and other applications. It is a versatile material that you can use. However, if you cannot find plaster of Paris, can you use the perfect cast as a substitute? Is there a difference between the two materials? We will discuss more this topic below.

Is perfect cast the same as plaster of Paris? The perfect cast is not the same as plaster of Paris. While both are plaster, they have different characteristics and components. For instance, a perfect cast is stronger, harder, and not nearly as fragile and lightweight as the plaster of Paris.

What is perfect cast and what is it used for? How do you use perfect mold and perfect cast? What is plaster casting? Is plaster of Paris toxic? These are some of the questions that we will discuss. Check out the rest of the article below for more tips and information.

Is perfect cast the same as plaster of Paris
Photo by ThisIsEngineering from Pexels

What is the Perfect Cast?

A perfect Cast is a casting tool that is five times stronger as compared to ordinary plaster. It is non-toxic and has a milkshake consistency. The perfect cast is easy to mix and pour. Add water and mix thoroughly. It can dry in about thirty minutes.

What is Perfect Cast Used For?

Perfect Cast is a casting material that is used for various art projects and other applications. For instance, it is ideal to use when making animal track casts. Simply mix it with water. It is quick-drying and can produce the highest detailed casts. You can use it with whatever kind of molds you have at home.

How to Use Perfect Mold and Perfect Casts?

To use the perfect mold, simply mix it with water and sink an object that you would like to use on your project into it. After it has dried, remove the object and use the perfect cast to fill the mold. The perfect cast mold is usually made from soft alginate which easily breaks away. Both the perfect cast and the perfect mold can be purchased at your local craft or hardware stores.

How to Cast Your Hand Using Perfect Cast

There are a few steps that you need to follow when making a cast of your hand using the perfect cast. This includes making the mold, making the cast, and removing the cast from the mold. When working with a perfect cast, do not use mixers because they can mix the ingredients quickly and can damage the cast.

Create the Mold

The first thing that you need to do is to create the mold. Think about the hand shape that you would like to do and look for the appropriate container. One of the materials that you can use when making the mold is alginate. Make sure to follow the mixing instructions written on the packaging. The main ingredients are alginate and water. Start by measuring the amount of water that you need to use and pour the powder. Stir the mixture thoroughly.

The next step that you need to do is to form your hand shape. For the hand shape to turn out perfectly, see to it that you do not leave any space between your fingers. Moreover, tucking your fingers also makes the case stronger. Dip your hand until you touched the bottom of the container and then pull it back up about one-half inches. Allow the mold to harden.

The good thing about using alginate is that it sets quickly. It takes about five minutes before the mold is ready to use. Gently wiggle and pull your hand until you feel the mold getting loose.

Create the Cast

The next step is to create the cast. Once the mold has been made, you need to immediately start pouring the plaster into it. The mixing procedure of the perfect cast is easy. All that you need to do is to follow the mixing ratios written on the packaging. Measure the ratio of water and add the powder into it. Mix thoroughly to remove the lumps. After reaching the right consistency, start pouring into the mold.

Pour slowly and do not fill up the mold immediately. Pour halfway into the mold and rotate the container to make sure that every corner of the mold is covered and there are no air bubbles trapped. Continue pouring until the mold is filled. After that, you need to remove as many air bubbles as you can. To do this, shake the container or tap it using a small tool. You can also check out this article titled, can I mix white cement and plaster of Paris? We have shared an in-depth discussion about the topic.

Remove the Cast

Allow the cast to dry. After it has dried, flip the container upside down to remove the mold. Using a knife, tear the mold to release the cast. There is no need to preserve the alginate molds because it can only be used once.

✅ Video – Perfect Cast Casting Material

Law Creations shared the video below on YouTube. It shows how to use perfect cast as a casting material. In the video, the process of making a cast piece using the perfect cast is shown. Check out the video for the visual demonstration.

What is a Casting Plaster?

Casting plaster is made by various companies and is also sold under different names. A common name for casting plaster is plaster of Paris. It is also referred to as gypsum plaster and art plaster. The most recognized name for casting plaster is plaster of Paris, but the two are used interchangeably. You can find different types of plaster that can be used in various casting applications.

Moreover, various grades of casting plaster are made for various purposes. Take note that each grade of casting plaster needs a different ratio of plaster to water. Aside from that, they also have different drying times. For instance, art plaster and casting plaster are a different grade of plaster that is ideal for three-dimensional casting. Another grade of plaster is pottery plaster which is usually used for making molds for ceramics.

Is Plaster of Paris Waterproof?

Plaster of Paris is not waterproof. It is a porous material and easily absorbs water that touches its surface. The good news is that you can waterproof the plaster of Paris. To waterproof it, you need to fill as many surface pores as you can. There are sealing agents that you can purchase on the market. Make sure to waterproof plaster of Paris casts before you place it outdoors. You can also check out this article that we have shared titled, what happens if plaster of Paris gets wet? We have shared an in-depth discussion about the topic.

Is Perfect Plaster Toxic?

Perfect plaster is not toxic. This casting medium is safe and is usually used for slip casting and ceramics. It is a high-grade plaster that is also used for casting.

Does Plaster of Paris Break Easily?

While plaster of Paris is very hard when it is dry, it is still breakable. Plaster of Paris is a hard white substance that is made by adding water to powdered plaster. When dried, it is hard as concrete or cement, but it is not as strong. Avoid using plaster for making thin castings. They are ideal for making basic shapes or designs with a solid backing.

To create plaster of Paris, fine ground gypsum undergoes a process called calcining where the ground gypsum is heated to 160 degrees. Once mixed with water, it can be used in various applications from sculptures to modeling. We have also shared this article that discusses if plaster of Paris is fireproof. Check out the article to learn more about the topic.

Is Plaster of Paris Good for Making Molds?

Plaster of Paris is an ideal material that you can use for making basic castings, molds, and art projects. It is easy to mix and use. Moreover, plaster of Paris sets in just a few minutes, but it can take a few hours before it can be removed from the mold. You can also check out this article that discusses if cement is stronger than plaster of Paris. We have shared helpful ideas that you can refer to.

Plaster of Paris Mixing Ratio

There are different ratios used for mixing plaster of Paris depending on the thickness and size of the cast that you will make. The ideal ratio for mixing plaster of Paris is three parts plaster of Paris powder and one part water. Measure the water ratio and pour it into the mixing container. You can always add two parts of plaster to water, but it can weaken the plaster casting. Read this article that discusses how to make plaster of Paris stronger. We have shared the different methods that you can do to make plaster of Paris stronger and more durable.


In this article, we have discussed if the perfect cast is the same as the plaster of Paris. We have found out that while both products are plaster, they have different characteristics. Moreover, we have shared tips and ideas on how to create cast hands using the perfect cast. We hope that this article has helped you learn more about plaster of Paris and perfect cast so that you can choose which product is best for the project that you would like to work on. Thank you for reading!

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