Why applying scale (and rotation) matters?

One of the biggest mistakes Blender newbies make is to forget to apply scale to models whenever it is possible.

First, let's talk about how to apply transforms:

  1. Make sure you are in Object mode (TAB if you are in Edit mode)
  2. Hit CTRL + A or go to menu Object -> Apply
  3. Hit Scale (or rotation)

But what is asymmetrical scaling? And why to apply scale?

Applying scale

Each object in Blender 3D has its own scale.This is not the same as the dimensions of the object - these are specified in the Dimensions parameter.

You can scale to objects along all axes (symmetrically), or along one or two axes - asymmetrically. This is usually what you do if you want to get the basic shape of your model quickly and you do it in object mode.

Applying scale means that the size of the object stays the same, but the Scale values are reset to 1 in all axes.

Why is scaling so important?


If you want your models to have accurate dimensions, you will want to move the vertices a certain distance even in edit mode. Some Blender operators use global units and some use local units. A good example is Bevel. If you bevel objects with a radius of say 1mm, but the scale of the object is not reset, the bevel will be the size multiplied by the values that are in the scale parameter. This means that even if you have symmetrical scaling but it is not applied, the bevel on the edge of the object will be in a different size than you wanted.

The same applies to modifiers. Try applying the Bevel modifier to the default cube that you simply stretch along one axis.

Hierarchy and animation

Other serious problems arise if you start putting your objects into a hierarchy.

Chaos can occur in various areas - the distance of objects from each other will not be clear (numerically) and once you start rotating or animating objects, all hell will break loose.

It will also make other things like copying animations between objects to each other, etc, virtually impossible.

So let's hope that's clear as day now. Just apply the scale whenever you can :)

What about rotation?

Applying rotation isn't as crucial, but still sometimes important.

When to apply rotation?

  • If you need a different 'default' rotation (after you reset rotations).
  • If you want the object to snap correctly to other objects. In the BlenderKit database, all objects have the same snapping system, as described in the upload tutorial.
  • If it will make animating is more convenient for you.
  • For particles or instances, you sometimes need to apply rotation so the instances are rotated well to the instancer surface.

Thanks for reading and scaling!

See next articles

Inverted normals

The quickest way to fix it in Blender

Brush Preview

No need to be special

Why are not all HDRs accepted?

Only the best for our artists

Upload real HDRs

Low range HDRs aren't really HDRs

How to improve scene composition?

It's all about the details

Add cameras to your scene

The more the merrier

Unclear scenes

Give your 3D scene purpose

Insufficient quality of uploaded asset

We all have to start somewhere

Asset fixed during validation

Sometimes miracles happen

How to improve thumbnail quality?

Great assets deserve great thumbnails

OpenGL vs DirectX normal maps

Open minds open hearts

How to name and describe assets?

The way to get better search results

Missing profile info

Every creator needs a profile

Upload looks like a test

Testing is awesome when it’s privet

Tiling textures

Visible tilling versus tileable textures

Unfinished asset

It's not over till it's over

Incorrect upload

Always test download your assets

Asset is too similar to previous upload

Just changing the color isn't enough

Duplicate asset

This never ends well

Disconnected nodes

How to fix them?

Nodes spaghetti

We prefer chocolate

Tutorial result models

Enough with the donuts

Material too simple

Let's make it better

IOR in materials

Let’s work it out

Subsurface scattering radius

Understanding SSS in Blender

Unconventional Thumbnails

Use standard BlenderKit previews for materials

Material PBR setup

How to do it right?

Wood mapping

How to do it?

How to reduce model file size in Blender?

Great tips to make life lighter

Manufacturer and designer tags

Don’t forget about them

Model Topology Issues

Why have issues?

Where are my textures?

Understanding why textures are missing from your file

Cycles / EEVEE systems

The way to improve materials

Why applying scale (and rotation) matters?

So many reasons to apply scale in Blender

Model unrealistic shape

The shape/proportions of the of the object aren't realistic. Check reference pictures to study more the real shape of this object.

Combining multiple assets

When to upload models separately and when to upload a composition?

Unrealistic texture size

How to correct it?

Models without materials

Not at our library

Authorship verification

How to prove your cool stuff is truly yours?

Put the model on the ground

How to position your model?

How important are good tags?

If you want your assets to be found, invest into tags

Original designs

Advantages and disadvantages of uploading original interior design models

Texel density in Blender

How to set it up accurately?

No AI Assets

Say no to AI, Stand with Artists