How do I resize in edit mode in Blender?

To resize in edit mode in Blender, select the element(s) you want to resize (vertices, edges, or faces) and then use the scale tool. Here's a step-by-step guide:

Steps:

1. Enter Edit Mode: Select the object you want to resize. Then, press Tab to enter Edit Mode.

2. Select Geometry: Choose the geometry you want to resize (vertices, edges, or faces). You can use the selection tools at the top of the 3D Viewport:

   • Vertex Select: Select individual points (1 key).
   • Edge Select: Select lines between points (2 key).
   • Face Select: Select surfaces (3 key).

   You can select multiple elements by holding Shift while clicking. To select all connected geometry, hover the mouse over a vertex and press L.

3. Activate the Scale Tool: Press S to activate the scale tool.

4. Scale:

   • Free Scale: Move the mouse to scale the selected elements. Click the left mouse button or press Enter to confirm the scale.
   • Axis Constraint: After pressing S, you can constrain the scaling to a specific axis by pressing X, Y, or Z. For example, S then Z will scale only along the Z-axis.
   • Numerical Input: After pressing S, you can type a numerical value for the scale factor. For example, S then 2 will double the size. You can then press Enter to confirm. Use decimals (e.g., 0.5) to shrink the selection.

5. Confirm: Click the left mouse button or press Enter to confirm the resizing.

Example:

Let's say you want to double the size of a cube along the X-axis.

1. Select the cube.
2. Press Tab to enter Edit Mode.
3. Press A to select all faces.
4. Press S to activate the scale tool.
5. Press X to constrain to the X-axis.
6. Type 2 and press Enter. The cube is now twice as long on the X-axis.

Tips:

• Proportional Editing: If you want to affect nearby geometry when scaling, enable Proportional Editing (press O or click the Proportional Editing icon in the toolbar at the top of the 3D Viewport). You can adjust the radius of the proportional editing influence with the mouse wheel after activating Proportional Editing.

• Pivot Point: The pivot point determines the center of the scaling operation. You can change the pivot point using the Pivot Point dropdown menu at the top of the 3D Viewport. Common options include "Median Point" (center of the selection) and "Individual Origins" (scales each element around its own origin).