![]() However, a large concrete planter box with walls 2” thick may take longer than 24 hours. These times are a general guide because a tiny cement craft will cure in less than 24 hours. Most concrete and cement mixes will take about one day to cure and then several more days to dry. The length of time you cure concrete planters will depend on the mix you are using and the size of the planter. The length of time will vary, according to the manufacturer’s instructions. Once you pour the mix into your mold, be sure to vibrate it until the air bubbles rise to the surface. You will want a slightly thicker apple sauce-like consistency for larger and thicker-walled planters. The best mixture consistency to use when you make concrete planters is typically a brownie batter consistency, like pictured above, so that you can pour it in and get into the grooves. The cavity’s thickness and the planter’s size determine this, which will be vital information. This article provides complete details on the best cement mix ratio. If you are using Portland cement, your cement-to-sand ratio should be either 3:1 or 2:1. Some mixes require the addition of sand, but most do not. How To Mix ConcreteĪ typical cement pot recipe is a 4:1 ratio of mix to water. Next, use hot glue to glue it to the bottom of the concrete mold and then fill the straw’s open end with glue. This is because the length will need to be the thickness of the bottom of the planter. So, how do you make a mold with a drainage hole?įirst, take a drinking straw and cut it to about 1/4″. ![]() It’s much easier to make drainage holes during mold-making than drilling them after the concrete has cured. And so, you will need to create a drainage hole. How To Create A Drainage Hole For A Concrete PotĬement and concrete planters need drainage holes, even though concrete and cement are porous materials. I discuss this in detail in my article about choosing the best mold types for your concrete projects. Reusing existing molds is also an excellent option for making planters. This article will tell you how to get your concrete shiny and how to get it matte. ![]() This article discusses all the methods for how to make concrete molds for crafts. You can also utilize other materials for making concrete molds. The method you choose will depend on the size and shape of the concrete planter you intend to make. I prefer using melamine since it has a smooth surface, which makes the concrete smooth and easier to demold. Or you can use materials such as wood or corrugated plastic.įor larger planters, use wood. You can make a mold for a concrete planter by creating your own silicone mold. Steps For How To Make Concrete Planters How To Make A Concrete Planter Mold *For details about handling concrete safely, take a look here. Be sure to protect your skin with very durable nitrile gloves when handling concrete and cement. A thicker glove will help prevent tearing.Īnother danger to working with concrete is the dry mix dust harms your eyes.Ĭoncrete also contains silica, which can cause cancer with repeated exposure. So please wear safety glasses and a silica-rated dust mask when handling concrete. Concrete is a caustic material that must be handled with gloves, especially when the mix is wet.Įven the dry mix powder can burn you. When you make concrete planters, there are precautions to take. You can go here to learn in-depth about the different concrete mixes. If you don’t vibrate the mix, you will have pin holes or pock marks (air gap holes) in your concrete planter. You will also need to vibrate the wet mix after you have cast your planter. But to do this, you must mix the cement or concrete so there are no lumps. Using a smooth cement mix to achieve smoothness in a planter is essential. Portland cement is another good cement mix for DIY planters. The easiest way to get a planter smooth is by using a smooth mix. I also like it because it’s one of the smoothest concrete mixes for planters. Here’s an article explaining the differences between the two.Ĭement All is the best mix for cement planters because it sets quickly and cures in about an hour. The process is the same whether you make a “concrete” or “cement planter,” but the mix may differ slightly. But the best mix for making pots will depend on what you are using as the mold, as well as the size of the planter. You can use almost any cement or concrete mix for planters. The Type Of Mix You Should Use To Make Cement Planters plastic bottles, plastic buckets, plastic containers.Durable nitrile gloves– I like these because they are so durable, you can rinse and reuse.Materials Needed To Make DIY Concrete Planters ![]() Click here to read my full disclosure policy. I only recommend products I’ve used and loved, unless otherwise stated. As an Amazon Associate I earn from qualifying purchases, at no extra cost to you. Some of the links on this page have been provided as a convenience for finding materials.
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