![]() If you can indent a fingernail in the curing layer, you can pour the next layer of epoxy, without scuff-sanding first.Also, large batches of mixed epoxy will cure faster than small batches. Keep in mind that warmer temperatures will make the epoxy set faster, and cooler temperatures will make it set more slowly.Wait until each layer has cooled to room temperature (70-80☏).This goes for deep pour epoxy and coating epoxy alike. Step-pouring (also called repouring) is necessary if the finished depth of your piece is deeper than the amount of epoxy you can pour in a single layer. How to Step-Pour Epoxy in Multiple LayersĪbove: custom sink created by step-pouring TotalBoat ThickSet You’ll also have to wait for the epoxy to set up between each layer. To get the thickness you want in the finished piece, you’ll have to pour the resin in multiple layers, called step pours. ![]() But it takes more work and more time to use a coating epoxy for casting because the maximum pour depth for coating epoxy is about ⅛” – ¼” per layer. Lots of people want to know this because they have some leftover epoxy from another project they want to use instead of buying more. They also have shorter working times and faster cure times. On the other hand, coating epoxies, such as TotalBoat TableTop Epoxy, TotalBoat MakerPoxy Artist’s Resin by Jess Crow, and TotalBoat High Performance 2:1 Epoxy, generate more heat per thickness/mass, so they MUST be applied in thin layers. Because deep casting epoxies such as TotalBoat ThickSet and TotalBoat ThickSet Fathom generate less heat, they give you a longer working time, but they also take longer to cure. In fact, deep pour epoxies MUST be poured in deeper layers in order to generate enough heat to cure. It also determines how thick you can pour it in a single layer.Ībove: Caleb Harris of pouring a deep epoxy riverĬasting epoxies can be poured deeper per layer than coating epoxies because they don’t generate as much heat per thickness/mass. ![]() But the amount of heat generated depends on the type of epoxy you’re using. Mixing epoxy resin and hardener creates a heat-producing (exothermic) reaction that makes the material harden and cure properly. Their cure time is also longer than coating epoxies.Ībove: used TotalBoat epoxy and pigments to create this stunning turning blank Why Can Some Epoxies Be Poured Deeper Than Others? By their nature, casting epoxies need to be poured thicker in order to generate enough heat to harden and cure. ![]() Coating epoxies are more flexible, less brittle, and tend to cure faster than casting epoxies.Ī casting epoxy is poured into a mold to create a finished piece, such as a turning blank or resin jewelry. Other than fast-setting adhesives, epoxies used in woodworking, resin arts, and crafting are typically either coating resins or casting resins.Ī coating epoxy can be used as a thin sealer coat, or as a protective, waterproof, durable coating on a finished surface. Casting ResinĪbove: Lavender floral dominoes with silver accents, created by using TotalBoat MakerPoxy In this post, we’ll explain why it’s important to stick to the recommended pour depth, what can happen if you don’t, and what to do if you pour too thick and ruin your project. For more on this topic, take a look at Which Epoxy Should I Use For My Project? For example, some epoxies are better for deep river tables, and some are better for casting shallower items like resin coasters and jewelry.Ībove: Epoxy coasters made with TotalBoat TableTop Epoxy – by systems vary in terms of clarity, working time, cure time, maximum casting thickness per layer, and other properties. To help you decide, think about how thick or how deep you want the finished piece. There are two important reasons for this: Your safety, and your success.Ībove: To find the maximum recommended pour depth, check the epoxy label or the product data sheetīesides choosing or making the perfect resin casting mold, you’ll need to figure out which epoxy to use. So it’s a good thing epoxy manufacturers go out of their way to let you know just how deep you can apply, cast, or pour their products in a single layer. Hey – we’ve all been there – pushed the pour-depth envelope and made a mess of what we were making.īubbling, smoking epoxy is a very bad thing. It’ll bubble, smoke, shrink, crack, and you’ll have to start over. Bubbles, bubbles, toil and trouble is what you get when you pour epoxy too deep.
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