Common mistakes when working with Geometry Nodes

Everyone makes mistakes, so in this section, let’s look at the mistakes that are most common in the community.

Chosen material doesn’t appear on the model

This is a common mistake among beginners. Sometimes, when you’re making use of node primitives, Blender will not put the material that you choose in the Material Properties menu on your model because Blender does not listen to the Material Properties menu when working with Geometry Nodes. Instead, you’ll need to define your material in the Geometry Nodes node tree.

This can be done by adding a Set Material node in a Geometry line where you want the material to be changed, as demonstrated in Figure 14.22.

Figure 14.22: Set Material node

Let’s look at another common mistake.

Applying a modifier makes (parts of) the mesh disappear

This problem is usually caused by instances that will not be visible once you apply your...