Modeling · Beginner

Modifier

A reversible effect stacked on an object, such as mirror, bevel or smooth

Also called Modifier stack, Non-destructive modifier

What is a modifier in 3D?

A modifier is an effect you add to an object that changes its shape automatically without touching the original mesh, such as mirroring, smoothing, beveling or repeating it. You can tweak, reorder or remove it at any time. Applying a modifier makes the change permanent.

Think of it like this

Like a filter in a photo app: the original picture stays untouched underneath, and you can adjust or remove the filter until you save it in.

Where it fits in a 3D project

  1. Create
  2. Surface
  3. Rig
  4. Animate
  5. Render
  6. Export

Create: Building the shape: modeling, sculpting, scanning or generating it.

How a modifier works

  1. 01Add a modifier to an object from the modifier panel.
  2. 02The software computes the new shape from the original mesh plus the settings.
  3. 03Stack several, and each one works on the result of the one above.
  4. 04Apply a modifier when you need the change turned into real geometry.

Modifier vs direct editing

PropertyModifierDirect editing
Changes the meshNo, until appliedYes, immediately
Change your mindAdjust or delete any timeOnly through undo
Good forMirroring, smoothing, repeats, bevelsUnique, hand-shaped detail
On exportUsually applied automaticallyExports as it is

Use modifiers for anything rule-based you may want to change later, and edit the mesh directly for one-off shaping.

Where a modifier is used

  • Mirroring half a model so both sides match
  • Smoothing with subdivision without committing to it
  • Repeating parts like fence posts, stairs and chain links
  • Bevels and booleans you can still adjust

Beginner tip

Model one half and add a mirror modifier. Every edit appears on both sides, which halves the work and keeps characters and products symmetrical.

Terms related to a modifier

Modifier FAQ

What are modifiers in Blender?
Blender’s non-destructive effects, found in the Modifier Properties tab under the wrench icon. Common ones are Mirror, Subdivision Surface, Bevel, Array, Solidify and Boolean.
What does applying a modifier do?
It turns the modifier’s result into real geometry and removes the modifier. Afterward you can edit the new vertices directly, but you can no longer change the modifier’s settings, so keep a copy if you might need them.
Does modifier order matter?
Yes. Each modifier works on the result of the one above it, so mirroring before beveling can give a different shape from beveling before mirroring. If something looks wrong, try moving it up or down the stack.

Updated October 29, 2026 · Browse all 3D terms