- Layout an end (front) view and a plan (top) view of the gutter. Like orthographic projection, the views must be vertical of each other.
- Draw a miter line at the required angle.
- Label the end view at each point.
- Make sure all the element lines are projected from the end view into the miter line
- To the right of the plan view, draw the stretch-out of the gutter, including all element lines and labeling.
- Where the element lines cross the miter line in the plan view, project the lines horizontally into the stretch-out.
- Where each projected horizontal line crosses the corresponding vertical element line of the stretch-out, circle the cross point.
- Joint the points on the pattern to complete the pattern.
