## Knife

[Knife] command provides the following five operations.

### Knife

It cuts a face crossed by a cutting line. And a line crossed by a cutting line is divided even if a cutting line does not cross whole a face.

When you click with pressing Shift key, the line is snapped by the specified angle (5, 10, 15 or 45 degrees).

Original |  | Drag the target line |  | Cut lines after release a mouse button

### Cut

It separates faces inside a line or a box into a new object.

Separated object shows in [Object Panel].

Cut mode - [Line]

  Original |  | A line is shown by dragging |  | Cut when a button is released

Cut mode [Box]

  Original |  | A box is shown by dragging |  | Cut when a button is released

Reserve cut side
  It registers the cut side as a new object. Immediately after cutting, it will be hidden.

  Processing may fail if there are intersecting faces or holes in the object. Fix the intersecting faces or close the openings with the [Hole] command, and try again.

### Hole

It makes a hole inside the specified region by clicking on the multiple points and right clicking.

When you click with pressing Shift key, each point is snapped from the previous point by the specified angle (5, 10, 15 or 45 degrees).

Original |  | Put multiple points to make a hole |  | Make a hole by clicking a right button

A center face cannot be cut by symmetric editing.

### Continual cut

It cuts off the adjacent quadrangle faces continuously. This can be used in increasing the number of vertices with cutting a cylinder in round slices.

Click a point on the line you want to cut. When you click with pressing the Shift key, you can cut off the center of lines.

Original |  | Click a line |  | A number of division is increased

When [Regular interval]

Regular interval
  If it is checked, [Continual cut] divides equally lines by the specified number.

  Regular interval - #3

Divide end triangle
  If it is checked, you can cut continually a triangle face which is connected with quadrangle faces.

  Divide - ON | OFF

### Continual erase

It behaves quite contrary to [Cut straight faces]. It combines two quadrangles first and continues to combine adjacent two quadrangles.

When the [Keep vertices] option is checked, only lines are erased without deleting vertices.

Original |  | Click lines |  | The line is deleted, and the number of division is decreased.