A Vertex Group is simply a collection of vertices (points on a mesh) that you assign a name to and can use for special purposes—like rigging, modifiers, or selection.<br /><br />Think of it as tagging certain vertices with a label so Blender knows “this part of the mesh belongs together.”<br /><br />🔑 Why Vertex Groups are Important<br /><br />Rigging / Armatures<br /><br />When you bind a mesh to an armature, Blender creates vertex groups automatically.<br /><br />Each group corresponds to a bone’s name.<br /><br />Example: The "Bone_L_Arm" vertex group contains the vertices of the left arm that should follow that bone.<br /><br />Weights define how much influence each bone has (via weight painting).<br /><br />Modifiers<br /><br />Many modifiers (like Armature, Lattice, Shrinkwrap, Mask, etc.) can use vertex groups to control which part of the mesh they affect.<br /><br />Example: A Mask Modifier can hide only the vertices in a specific vertex group.<br /><br />Selections<br /><br />You can quickly select/deselect saved vertex groups in Edit Mode.<br /><br />Useful for modeling complex meshes.<br /><br />🔹 How to Create and Use Vertex Groups<br /><br />Go to Properties → Object Data Properties → Vertex Groups (triangle icon).<br /><br />Click + to create a new vertex group.<br /><br />Select vertices in Edit Mode → Click Assign (to add them to the group).<br /><br />You can set weights (0.0 – 1.0) to control influence.<br /><br />Use Select / Deselect buttons to quickly work with them later.<br /><br />🔹 Example<br /><br />You have a character with an arm bone.<br /><br />The arm’s vertices belong to the vertex group “Arm.L”.<br /><br />When you move that bone, only those vertices move because they’re part of that group.<br /><br />✅ In short:<br />A Vertex Group is a named set of vertices, often with weights, that Blender uses for rigging, modifiers, and selections. They’re the backbone of smooth character animation and deformation.
