Sculpture can be created with several different materials, including concrete. There are three ways to created a sculpture from concrete. Concrete sculptures can be created by casting the concrete, carving the concrete, or using wire mesh. All three of these methods of sculpting concrete can result in beautiful concrete sculptures.
Steps
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Select a cast. Before you mix your concrete, you must first secure a cast. A cast can be homemade cast made from plastic or styrofoam or purchased at a hardware store. You can also find a wide array of concrete casts to purchase online.
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Combine the concrete mix and water. Empty a bag of concrete mix into a large bucket or wheelbarrow. Carefully measure out the recommended amount of water. For example, an 80 pound (36 kg) bag of concrete typically requires about three quarts (2.8 liters) of water. Add approximately two-thirds of the water to the concrete mixture. [1] X Research source
- Set aside two cups (0.5 liters) of concrete mix. This mix can be added to the concrete if the consistency is too runny.
- Read the mixing instructions on the bag of concrete to ensure that you have the correct ratio of water to concrete mix.
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Mix the concrete. Use a concrete mixing tool, hoe, or drill bit to mix the concrete together. Continue to add the water that you have set aside until you reach a thick, oatmeal-like consistency. The wet concrete should hold its form if you squeeze a fistful. [2] X Research source
- Concrete that is too runny is easier to pour but less durable and more likely to break over time.
- Add more water to your concrete mixture if the mixture is solid and crumbly. [3] X Research source
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Pour the concrete into the cast. Slowly pour the concrete mix into the cast until it is completely full. Use a metal trowel to smooth the top of the concrete. [4] X Research source
- You can apply a small amount of engine oil to the cast before pouring the concrete to ensure that the concrete is removed from the cast easily without damaging the sculpture.
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Remove the cast. Once the concrete is completely dry, remove the cast. Most casts are removed after one day. Sometimes, the sculpture is removed from the cast and the cast remains intact. Sometimes, the cast is cut away to reveal the sculpture. [5] X Research source
- Allow the cement to cure for at least one week before use.
- Read the instructions that come with the cast. These instructions will give you specific information about when and how to remove the cast. Each project will be different.
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Locate carving tools. Carving tools, such as knives, scrapers, and hammers, that are typically used for ceramic sculpting work best to carve concrete. You can find these tools at most craft or art shops. [6] X Research source
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Lay out your design. Freehand or stencil your desired design onto the concrete with a pencil or chalk. This will give you a guide to work off of. [7] X Research source
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Mix and pour the concrete. Using the directions on the bag of concrete, mix the concrete in a large bucket or wheelbarrow. Most 80 pound (36 kg) bags of concrete require three quarts (2.8 liters) of water. Pour the concrete into the desired concrete mold and allow it to partially dry before beginning the carving. [8] X Research source
- Pour the concrete in small, workable sections to prevent the concrete from drying before you finish the sculpting.
- Concrete that is too runny is easier to pour but less durable and more likely to break over time.
- Add more water to your concrete mixture if the mixture is solid and crumbly. [9] X Research source
- The amount of time that you need to wait will depend on the thickness of the concrete mold. The concrete is ready to carve when it is still malleable and holds it’s shape.
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Carve the design. Before the concrete is completely dry, begin to carve out your design using the sculpting tools. Begin at the top of the sculpture and work your way down. You will have to work quickly in order to finish the carving before the concrete dries. Try to finish a section of concrete within one hour of pouring.
- Coat your hands in petroleum jelly to prevent the concrete from damaging your skin.
- Avoid touching the surface of the sculpture until it is completely dry to prevent any smudging. The concrete should be dry within 24 hours but should be left to cure for seven days.
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Cut the mesh. Cut the metal mesh into the desired shape using wire cutters. This mesh will serve as the framework for your sculpture. It will hold the wet concrete in place until it dries. [10] X Research source
- Use a metal mesh that is heavy enough to hold its own shape.
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Wrap the mesh around something hard. If you are unable to manipulate the mesh into your desired shape, try wrapping the mesh around something hard, like cardboard or styrofoam, to form the desired shape of the sculpture.
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Mix the concrete. Mix the concrete mix and water in a large bucket or wheelbarrow. Use a concrete stirrer, hoe, or drill bit to stir the concrete until it is thoroughly mixed. Most 80 pound (36 kg) bags of concrete require three quarts (2.8 liters) of water. The mixture should be a thick, oatmeal-like consistency. [11] X Research source
- Read the instructions on the bag of concrete before mixing the concrete and water. The instructions will provide clear ratios of water to concrete.
- Concrete that is too runny is easier to pour but less durable and more likely to break over time.
- Add more water to your concrete mixture if the mixture is solid and crumbly. [12] X Research source
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Apply the concrete to the mesh. Using a metal trowel, or another hand tool, apply the concrete to the wire mesh. Apply the concrete in thin layers. Add more layers until you achieve your desired shape. [13] X Research source
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Let the concrete dry. The concrete will be dry to the touch within 24 hours. However, you should allow the concrete to cure for seven days. Avoid touching or moving the sculpture during this time.
Expert Q&A
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QuestionHow do I clean a concrete mixer?Sina Kamran is a Hardscaping Specialist and the Owner of Design Scapes, Inc. in Santa Monica, California. With over 15 years of experience, he specializes in customized, site-specific hardscaping and landscaping design/build projects. He's a certified National Concrete Masonry Association (NCMA) designer, a certified installer with the Interlocking Concrete Pavement Institute (ICPI), and a Rain Bird Certified Irrigation Professional. Additionally, Design Scapes, Inc. has many 5-star rated reviews.To clean a concrete mixer, if there's only a slight residue of cement, you can add more water and use a brush to clean it. However, if there's dried-up, hardened concrete inside, break it up first, then clean it with water and a steel brush.
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QuestionHow long do I need to wait to add layers of concrete when sculpting?Community AnswerWhat's worked best for me is to add layers while the first layer is still curing or semi-moist.
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QuestionHow do you keep the concrete from going through the wire form?Community AnswerYou have to make sure you don't add too much water. Concrete is "sticky," so as long as you don't add too much, it stays in a modeling clay type consistency.
Video
Things You’ll Need
- Concrete cast
- Concrete mix
- Water
- Bucket or wheelbarrow
- Concrete mixing tool, hoe, or drill bit
- Engine oil
- Concrete carving tools (hammer, knife, and scraper)
- Stencil (optional)
- Pencil or chalk
- Wire mesh
- Metal trowel
Tips
- When dealing with wet concrete, work quickly to prevent the concrete from drying before you are complete.Thanks
- Wear gloves or coat your hands in petroleum jelly when working with concrete to prevent skin damage.Thanks
- Avoid making your concrete too runny. Although it is easier to pour, the concrete will not be as durable as properly mixed concrete.Thanks
Warnings
- Concrete can be messy. Be sure to work outside or in a workshop.Thanks
- Read the instruction label provided with the concrete mix, mold, or cast for best results.Thanks
References
- ↑ https://www.quikrete.com/athome/video-mixing-concrete-hand.asp
- ↑ https://www.quikrete.com/athome/video-mixing-concrete-hand.asp
- ↑ https://www.familyhandyman.com/masonry/pouring-concrete/how-to-properly-mix-concrete/view-all
- ↑ https://www.quikrete.com/pdfs/projects/castconcreteprojects.pdf
- ↑ https://www.quikrete.com/pdfs/projects/castconcreteprojects.pdf
- ↑ https://www.concreteconstruction.net/products/decorative-concrete-surfaces/carving-concrete_o
- ↑ https://www.concreteconstruction.net/products/decorative-concrete-surfaces/carving-concrete_o
- ↑ https://www.concreteconstruction.net/products/decorative-concrete-surfaces/carving-concrete_o
- ↑ https://www.familyhandyman.com/masonry/pouring-concrete/how-to-properly-mix-concrete/view-all
About This Article
To sculpt with concrete, start by combining concrete mix with water, pouring it into a cast, and smoothing the top with a metal trough. Then, give it at least a day to dry before you remove your sculpture from the cast. Alternatively, you can shape metal mesh into the design you want, then mix and apply concrete over the mesh to create your sculpture. You can also carve your design directly into concrete that’s been poured, but hasn’t completely set or dried. For tips on how to mix concrete so it’s easy to sculpt with, scroll down!
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