Ein Modell kann durch folgende Schritte zurecht geschnitten werden.

While working on models there are often cases where the geometry of the model needs to be removed or otherwise modified. There are multiple options, explained here from most simple to most complex.

1) Cutting

In this case, the object we are working with has unwanted bolt holes on the right side, which we don't want since it increases vertex count and shading issues caused by the holes.

To make a straight cut, we need to enter isometric view mode.

A cut can only be made in edit mode (to enter and exit press the tab key, or the dropdown on the top left). Press the K key to use the cut tool and then C to make the cut through the whole object. Click to start the cut, and click again to end, then Enter to confirm the cut action.

To select vertices through the entire model, use X-ray mode (see arrow top right), then use box select to choose all the geometry