Additionally, the failure to reduce the number of overlapping vertices and duplicated geometry will cause issues to your material application, your lighting effects, and your rigged animations. This can include the appearance of jagged edges for the Boolean as well as the inclusion of, again, shaded artifacts. However, if the Boolean overlaps any areas where you have duplicate geometry, then it’s going to create weird results that are not going to be useful to the user. The Boolean modifier allows you to take a Boolean object and cut a custom shape into your main object. This is a result of the increased geometry in a very small space.Īnother example is the Boolean modifier. There are a lot of tools in Blender that are influenced by the current topology of your object.įor example, if you were to use the subdivision surface tool on an object that has that overlapping geometry, then the subdivision surface tool or subdivision service modifier is going to try and divide up the geometry as best it can.īut as you have even more geometry in what is already a very tight space, shading artifacts are more likely to become visible. And if you have overlapping vertices then their normals will be overlapping as well, which is what causes the shading artifacts.Īnother reason why it is important to remove duplicate geometry and overlapping vertices is when you are using specific tools. The reason why is because smooth shading uses the direction of the object and vertex normals to define that shading. However, if you have overlapping geometry and then choose to use smooth shading, then artifacts are likely to appear where your geometry is overlapping. When we use the smooth shading tool, we can make our objects look much smoother on the surface and make them appear more natural. What Happens If You Do Not Remove Overlapping Or Duplicated Geometry?Ī key question to ask is exactly why do we need to do this in the first place? What is the main purpose of using the merge by distance tool or other tools to remove overlapping or duplicated geometry? One reason why this is important is to avoid shading artifacts. To access the merge menu and use merge by distance, first hit the TAB key to enter edit mode for your object, and then select the geometry of your mesh by pressing the A key. It is known as merge by distance and is one of several options under the merge menu. That tool still exists in Blender today but is now under a different name. The primary method for removing duplicate geometry in Blender used to be the remove doubles, which did exactly what it said, locating vertices that overlapped each other and then combining them into a single vertex. How Do I Remove Duplicate Geometry In Blender? There are many reasons why you should be checking your geometry and ensuring that there are no incorrect normals, self-intersecting vertices, or duplicate geometry, and the merge tool is one of the quickest ways to clean up your topology of some of these issues. Use the M hotkey to open the merge menu and then select the merge by distance option to remove doubles. To remove your duplicate geometry from your model, Hit the TAB key to enter edit mode for your model, and then press A to select all of your geometry. One tool that always comes in handy here is the merge by distance tool to remove duplicate geometry. If you are modeling 3D objects for just about any purpose, then one of the skills that you will need to learn is the ability to clean the topology of your model so that it behaves correctly when used with materials, lighting, animation, modifiers, and more.
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