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DIY Concrete Molds For Planter: A Beginners Guide.


Making my very own concrete mold can be an adventure and rewarding experience. Creating your planter mold can be daunting if it is your first time. Planters usually come in generic dimensions. In rare cases, you may encounter a uniquely shaped planter that you want to replicate into a concrete form.

In my case, my planter broke when I was demolding. I used duct tape as a temporary fix. 

DIY concrete molds are a creative and cost-effective way to add your unique flare. Creating your planter fulfills your craft itch and offers you to showcase your personality to your indoor and outdoor plant collection.

This article will walk you through making your concrete mold from scratch. This step-by-step guide will give you the inspiration and knowledge to start.

How to make molds for concrete planters

Let’s get started with making your concrete mold. Here are the steps to help you begin your journey:

Material needed for your project:

Concrete mix: Opt for a high-quality concrete mix that suits your project requirements. Look for a mix that is specifically designed for creating molds.

Mold release agent: This is crucial to ensure that the concrete easily separates from the mold once it has hardened. You can find mold release agents at your local hardware store.

Mixing tools: Prepare a bucket, a trowel, and a mixing drill to blend the concrete mixture thoroughly.

Circular Saw

Measuring tape

Silicone caulking

Plywood

Drill

Sandpaper

The first step is to select a suitable container for holding the master planter to create the mold. If you don’t have a box/ container large enough to hold the planter, you have to make a container from scratch.

Ensure you have a circular saw, measuring tape, screws, drill, and silicone caulking.

Measure and mark the dimensions of the plywood using the measuring tape and pencil. Once you have the outline, cut the board to the desired shape with a circular saw. 

Once you have the outline, use the saw to cut the board to the desired shape. Assemble the sides of the plywood to the desired height of your planter. These pieces will be the walls of the mold; make sure the walls are sturdy and well-aligned with the base.

Attach the side to the base using screws and drill to ensure they are fastened.

The release agent is needed for the next step to prevent concrete from sticking to the mold. Brush a thin layer of release agent. As a substitute, you can use vegetable oil. The thin layer is applied inside of the mold. The release agent will make removing the planter easier once the concrete is fully cured.

Once the mold is fully assembled and the release agent is applied, it’s time to mix and pour the concrete. Mix the concrete per the instruction on the package. Pour the concrete into the mold. As you pour the concrete, shake or tap the sides of the mold to eliminate bubbles and ensure proper mixing.

Allow the concrete to cure for at least 24 hours or recommended by the cement manufacturers.

Once the concrete has fully cured, it’s time to remove the planter from the mold. Gently tap the sides and bottom of the mold to loosen the concrete, then carefully lift the mold away. If needed, use sandpaper to smooth any rough edges or imperfections on the planter’s surface.

What are the benefits of DIY Concrete Molds For Planters?

Creating your concrete molds offers a multitude of benefits and satisfaction when crafting them. Here are the benefits of making your own concrete mold.

1. First, crafting your own concrete mold is a cost-effective solution. Creating your own mold saves a lot of money compared to purchasing pre-made planters from stores. 

Concrete is an affordable and widely available material, making it an excellent choice for DIY enthusiasts.

2. DIY concrete molds can be customized to your heart’s content. Concrete allows to experiment with various shapes, sizes, and designs. Depending on your garden or indoor space, you can tailor-make sleek, modern planters or rustic ones.

3. Concrete planters made from DIY molds are ideal for outdoor spaces. The planters are long-lasting that can withstand varying weather conditions. Concrete planters are resistant to fading, cracking, and chipping. The concrete durability saves you from the hassle of replacing and repairing.

4. Concrete planters are excellent insulation for plants. The dense concrete helps with soil temperature regulation protecting the soil from extreme temperature changes. The constant temperature in the planter allows for optimal growth conditions for your plants. 

5. Concrete planters are environmentally friendly compared to those made from plastic. Concrete is a natural material and can be recycled. 

Frequently Asked Questions:

1. Can I reuse the concrete molds?

Yes, you can reuse your concrete molds multiple times. However, ensure that you properly clean and apply a mold release agent before each use to ensure easy demolding.

2. Are there any safety precautions I should take?

 Always wear protective gear such as gloves, goggles, and a dust mask when working with concrete. Also, handle concrete mix and mold release agents per the manufacturer’s safety guidelines.

3. How long does it take for the concrete to cure?

 The curing time varies depending on the type of concrete mix used. Generally, the concrete takes around 24-48 hours to cure and fully achieve its maximum strength fully.

4. Can I add color to my concrete planters?

You can add color to your concrete using pigments or dyes specifically designed for concrete. Mix them into the concrete mix before pouring them into the mold to achieve the desired color.

5. Are there any alternatives to concrete for creating molds?

 While concrete is the most commonly used material for molds, you can also explore alternatives such as plaster or hypertufa. Each material has its unique characteristics and suitability for different projects.

Check out these related post:

The best cement mix for concrete planters

How to paint concrete planters

Ginny Orenge

Hi, my name is Ginny, home and garden decor ideas is a family business specializing in inspiring you in getting in making your own craft at home. I have also loved creating my own art at home. I hope to share my tips in creating both home and garden decorations that you can be proud off.

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