Why applying scale (and rotation) matters
One of the biggest mistakes Blender beginners do is to forget to apply scale of your models whenever this is possible.
First, let's talk about how to apply transforms:
- Make sure you are in Object mode (TAB if you are in Edit mode)
- Hit CTRL + A or go to menu Object -> Apply
- Hit Scale (or rotation)
But what is assymetrical scaling? And why to apply scale?
What is assymetrical scaling and applying scaling
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.
This is not the same as the dimensions of the object - these are specified in the Dimensions parameter.
You can scale 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 this 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, you will be out of luck and the bevel on the edge of the object will be 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.
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 ;)
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 animating is more convenient for you that way
- For particles or instances, you sometimes need to apply rotation so the instances are rotated well to the instancer surface.
See next articles
In this short article, we will talk about Fantasy Design. The BlenderKit team sees Fantasy Design - as a design not of a very high level. As a rule, novice designers do not have enough knowledge, but they have a great desire to do Fantasy Design.