How do I enable vertex snapping in Blender?

To enable vertex snapping in Blender, you need to activate the snapping feature and then specify which element you want to snap to (in this case, vertices). Here's how:

1. Activate Snapping: Locate the snapping toggle button in the 3D Viewport's header. It looks like a magnet. Click it to turn snapping on. When the magnet is highlighted (usually blue or white), snapping is enabled.

2. Choose Snapping Element: To the right of the snapping toggle, there's a dropdown menu that determines what Blender will snap to. Click this menu and select "Vertex". This tells Blender to snap to vertices (corners) of other objects or the same object, depending on your needs. Other options include "Increment", "Edge", "Face", "Volume", and "Edge Center." For your purpose, "Vertex" is the correct choice.

3. Use Snapping During Transformations: With snapping enabled and set to "Vertex", initiate a transformation like grabbing (G), rotating (R), or scaling (S). As you move your mouse, Blender will automatically try to snap the selected element (e.g., the grabbed object's vertex) to the nearest vertex.

4. Adjust Snapping Options (Optional): The snapping dropdown menu also includes a "Snap Target" option (sometimes located next to the snapping type, depending on the Blender version). "Closest" is often the default and snaps to the nearest vertex. Other options like "Center" (for snapping to the average location) or "Median" (for snapping to object origin) may be useful in certain scenarios. Experiment to see which Snap Target works best for your workflow.

5. Hold Control for Temporary Snapping: While transforming an object, you can temporarily toggle snapping on or off by holding down the Ctrl key (on Windows/Linux) or Cmd key (on macOS).

Example:

Let's say you want to move one cube so that one of its vertices perfectly aligns with a vertex on another cube.

1. Enable snapping.
2. Set the snapping type to "Vertex."
3. Select the cube you want to move.
4. Press G to grab.
5. Move your mouse near the target vertex on the other cube. You should see the vertex of the moving cube snap to the target vertex.
6. Click to confirm the move.

By following these steps, you can effectively use vertex snapping to precisely align objects in Blender. You can also combine Vertex snapping with other snapping targets, like Edge or Face, to snap to multiple elements.