How to Use Object Offset in Blender Array Modifier

The Array Modifier in Blender allows you to create multiple duplicates of an object, and utilizing the Object Offset feature provides precise control over their transformation. By linking the array to a target object—typically an Empty—you can dynamically rotate, scale, and move the duplicated items to create complex shapes like circular patterns, spirals, and staircases. This guide provides a direct, step-by-step process for setting up and mastering the Object Offset feature in Blender.

Step 1: Set Up Your Base Mesh and Empty

  1. Select your main object in the 3D Viewport.
  2. Press Shift + A and select Empty > Plain Axes. This Empty object will act as the control anchor for your array duplicates.
  3. Ensure both your main object and the Empty share the exact same origin point for predictable transformations (usually the center of your object or the 3D Cursor).

Step 2: Apply Scale and Rotation

Incorrect scale or rotation values will cause unpredictable array behavior.

  1. Select your main object, press Ctrl + A, and choose All Transforms (or Rotation & Scale).
  2. Select the Empty object, press Ctrl + A, and choose All Transforms.

Step 3: Configure the Array Modifier

  1. Select your main object and go to the Modifier Properties tab (wrench icon) on the right panel.
  2. Click Add Modifier and select Array.
  3. Increase the Count value to the total number of duplicates you want.
  4. Uncheck Relative Offset (and Constant Offset if enabled).
  5. Check the box next to Object Offset to expand its settings.
  6. Click the Object field inside the Object Offset section and select your Empty from the list (or use the eyedropper tool to click the Empty in the viewport).

Step 4: Transform the Empty to Control the Array

Now that the Array Modifier is linked to the Empty, any transformation applied to the Empty will offset each subsequent copy in the array relative to the previous one.

  • For Circular Arrays: Select the Empty, press R, and rotate it along a specific axis (e.g., R then Z to rotate on the Z-axis). If your object count is 12, rotating the Empty by 30 degrees (360 / 12) creates a full, perfectly spaced circle.
  • For Spirals or Staircases: Select the Empty, press G then Z to move it vertically, and press R then Z to rotate it simultaneously.
  • For Scaling/Sizing Effects: Select the Empty and press S to scale it up or down. Each duplicate in the array will grow or shrink incrementally relative to the previous duplicate.