Make holes with an object in Blender

Introduction

In this article we see how to make holes in Blender using the “Boolean” modifier in the “difference” mode, this allows us to remove the volume that occupies a second piece inside the object. You will also find a video showing how to use the boolean modifier in video.

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Procedure for making holes in Blender

We are going to take a cube and make a hole in it using a cylinder, as shown in figure 1.

a hole will be made in the cube using the cylinder in blender
Fig. 1: We start with a cube and a cylinder.

Select the cube and go to the “Modifiers” tab, shown in figure 2. Then add the Boolean modifier, as shown in figure 3.

blender object modifiers
Fig. 2: Select the cube and go to the modifiers tab.

Boolean modifier blender for making holes
Fig. 3: We added a Boolean type modifier

In the “Object” field of the modifier we have to assign the object that is going to make the cut, in our case the cylinder. We can use the eye dropper to select the cylinder or we can choose it from the list.

The operating mode must be “Difference”, so that all the space occupied by the cylinder inside the cube is eliminated, as shown in figure 4.

select cutting object to make hole in blender
Fig. 4: In the Object field, we select the cutting object, in this case the cylinder.

Then we place the cylinder where we want the hole to be made.

position cutting object to make hole in blender
Fig. 5: We position the cylinder according to how we want the hole.

If we go to the Outliner and hide the cylinder (figure 6) we see that the piece has already made the hole.

cutting object is hidden in the outliner of blender
Fig. 6: We hid the cylinder in the Blender Outliner to see the result.

a hole was made in blender using the boolean modifier
Fig. 7: Hiding the cylinder shows that a hole has been made in the workpiece.

When we don’t have to make any more changes, we can apply the modifier to make the cut effective. In figure 9 we see how the geometry looks after applying the modifier.

apply boolean modifier to make hole in blender
Fig. 8: We apply the Boolean modifier to make the cut effective.

a hole was made in blender using the boolean modifier
Fig. 9: En la geometría podemos ver el corte.

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