Chloe Adams
Creating candle holders from cement or concrete is a fun DIY project, but it can be challenging to prevent wax from seeping through. One way to prevent this is to use an interior sealant or a type of expansion cement, which expands slightly as it dries, creating a better seal. To make a candle holder, you'll need a mould, which can be made from a variety of materials, such as cups, bottles, or plastic containers. You'll also need cement or concrete, which can be mixed with water to create a pourable substance. After pouring the mixture into your mould, it's important to vibrate or tap the mould to remove air bubbles and create a stronger candle holder. Once the cement dries, you can remove it from the mould and seal it if desired.
How to seal cement candle vessels
| Characteristics | Values |
|---|---|
| Cement type | Portland cement mix, Quickcrete, or expansion cement |
| Sealant | Modge Podge Outdoor, interior sealant, or wax |
| Mold | Paper or plastic cups, plastic containers, or coke bottles |
| Process | Mix cement with water to create a pourable substance, vibrate the mold slowly to remove bubbles, let it dry for 24-36 hours, soak in water for 4-5 hours, and remove the mold |
| Tips | Spray molds with cooking spray or use petroleum jelly/oil for easy removal, tap out molds to remove air bubbles, and clean with tissue paper |
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What You'll Learn
Use expansion cement to seal cement candle vessels
When creating candle vessels, you may encounter issues with wax seeping through the concrete. To prevent this, you can use expansion cement.
Expansion cement is a type of cement that expands slightly as it dries, filling in any tiny cracks or air bubbles in your vessel and creating a better seal. This can help to prevent wax from seeping through and ensure your vessel is less porous.
To use expansion cement to seal your cement candle vessels, start by mixing your cement with water to create a pourable substance. Spray your molds with cooking spray to ensure easy removal later. Then, pour your cement mixture into the molds, leaving a gap at the top for your candle mold. Tap out your molds on a table to remove any air bubbles and create a smooth, even surface.
Once your cement vessels have dried, you can further seal them by applying a sealant. This will help prevent the cement from absorbing molten wax and leaking it to the outside. You can find sealants specifically designed for concrete candle vessels, such as Modge Podge Outdoor, or try a product like Hartline 10006 Rockite Cement from Amazon, which has been recommended by other candle makers for sealing concrete vessels.
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Sealants can prevent molten wax from being absorbed
Concrete is a porous material, and while it is possible to create candle holders and vessels using concrete, special care must be taken to prevent wax from seeping through. One way to prevent this is to use an appropriate sealant. Sealants can be applied to the inside of concrete candle vessels to prevent molten wax from being absorbed and possibly leaking to the outside.
There are a variety of sealants available that can be used to seal concrete candle vessels. One option is to use an expansion cement. Expansion cement expands slightly as it dries, which helps to "seal up" any cracks or air bubbles in the concrete. This can prevent wax from seeping through and create a smoother finish. Other sealants can also be used, such as interior sealants, which can be purchased online or at hardware or craft stores.
It is important to note that not all sealants are created equal, and some may not be effective in preventing wax absorption. One user reported disappointing results after using a sealant, as their concrete candle holder still absorbed wax and leaked. It is recommended to research and test different sealants to find one that is suitable for your specific needs.
In addition to using sealants, there are other techniques to prevent wax absorption and create strong and durable concrete candle vessels. One technique is to vibrate the mould slowly while pouring in the cement liquid. This helps to remove bubbles from the mixture, making the candle holder stronger and less likely to break. Another technique is to use a cooking spray or petroleum jelly on the moulds before pouring in the concrete. This will make it easier to remove the moulds once the concrete has dried and can help create a smoother surface.
Overall, creating concrete candle vessels requires careful planning and the use of appropriate materials and techniques. By using the right sealants and following best practices, it is possible to prevent wax absorption and create functional and aesthetically pleasing concrete candle holders.
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Use cups to mould your cement candle vessels
To make cement candle vessels, you can use cups as moulds. You can use any smoothly surfaced container that you can easily slide a hardened form out of. Paper or plastic cups are good options.
First, mix your cement with water to create a pourable substance. It shouldn't be too watery, but it also shouldn't be able to hold its shape on its own. Spray your cups with cooking spray to ensure that you can remove them from the dried cement later.
Next, pour your cement mixture into the cups, leaving a gap at the top for your candle mould. Tap the cups on a table to remove any air bubbles and create a smooth surface.
Once the cement has dried, remove the cups by peeling or popping them off. If using paper cups, you may need to cut them off with scissors. You can then sand the cement to create a smoother surface if desired.
Finally, place a candle in your new cement candle vessel and enjoy!
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Vibrate the mould slowly to remove bubbles
Vibrating the mould is an effective way to remove air bubbles from cement candle vessels. This technique can be done in several ways, each of which helps to draw air and water bubbles away from the surface of the concrete.
One way to vibrate the mould is to use a vibrating table. Place the mould on the table and turn it on, allowing the vibrations to move through the mould and draw the bubbles to the surface. You can also use a handheld vibrator for this purpose. Gently tap the sides of the mould with your hand or a rubber mallet while vibrating it to further help the concrete settle and release any trapped air bubbles.
Another method is to thump or hammer the mould. This can be done by firmly tapping the mould on a table or other hard surface, or using a mallet or hammer to strike the mould. This action creates vibrations that help to dislodge air bubbles and allow them to rise to the surface and escape.
It is important to note that vibration is most effective when combined with other techniques for removing air bubbles. For example, extending the mixing time of the concrete can help to break up residual air bubbles and create a more uniform consistency. Additionally, using a concrete mix with smaller aggregate stones and a higher percentage of fine aggregate will result in fewer air bubbles. Properly preparing the mould by ensuring it is clean, dry, and free of debris, as well as using a mould release agent, can also help to prevent the formation of air bubbles.
By combining vibration with these other techniques, you can effectively remove air bubbles from your cement candle vessels and create a smooth and polished finish.
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Use Portland cement mix for your cement candle vessels
Portland cement is a popular choice for creating cement candle vessels. It is a type of cement that can be mixed to create your own custom cement blend, or it can be used on its own. When used alone, Portland cement has a pure white colour and a smooth finish. However, it is quite weak and brittle, so it needs to be reinforced with other materials to increase its strength.
To create your own cement mix using Portland cement, you can mix it with sand or marble powder. One recipe suggests using equal parts Portland cement and playground sand, and then adding water until a peanut butter-like consistency is achieved. This mixture can then be used to create your candle vessels. However, be aware that using too much Portland cement can result in a very weak candle vessel that can easily break.
Another option is to use Portland cement in conjunction with gravel and sand to create Quikrete concrete. This mixture is stronger and more suitable for heavy applications like structural construction and repair. However, it may not have the same smooth and white appearance as pure Portland cement.
When working with Portland cement or any other cement or concrete, it is important to take safety precautions. Wear gloves, eye protection, and breathing protection, such as a mask or a bandana wrapped around your mouth and nose. It is also recommended to work in a well-ventilated area to avoid inhaling the fine powder created by these materials.
Additionally, when creating candle vessels, it is important to ensure that your moulds are well-sealed to prevent the molten wax from seeping through. You can use cooking spray or other sealants to help release the dried candle vessel from the mould more easily. Be sure to tap out your moulds to remove any air bubbles and create a smooth surface.
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Frequently asked questions
Portland cement mix can be used as is or mixed with sand or marble powder to strengthen it. Expansion cement is also a good option as it expands slightly as it dries, which helps to "seal up" better.
You can use any smoothly surfaced container that you can easily slide a hardened form out of. Paper or plastic cups work well for tea lights. You can also use plastic containers, such as a coke bottle, as moulds.
Applying an interior sealant can help prevent the cement from absorbing molten wax and leaking it to the outside. Modge Podge Outdoor can also help seal and strengthen your vessel for outdoor use.
