Auxiliary Views

Step 1 Given the front, top, and left side views, draw foldline P-1 using a phantom line parallel to the edge view

of the inclined surface. Place the line at any convenient distance from the profile view.

Step 2 Draw fold line F- P between the front and profile views, perpendicular to the projectors between the

views and at a distance X from the left edge of the front view. Draw fold line H-P between the top and

profile views, perpendicular to the projectors between the views, and at a distance X from the rear edge

of the top view. The distance from fold line H-P to the top view must equal the distance from fold line F-

P to the front view. Draw parallel projectors between each view, using construction lines.

Step 3 Project the length of the inclined surface from the profile view to the auxiliary view, using construction

lines. The projectors and are perpendicular to the edge view and projected well into the auxiliary view

from corners A, B and D, C.

Step 4 Transfer the width of the inclined surface from the front view by first measuring the perpendicular

distance from fold line P – F to the left side of the front view. For this example, point B is measured at

distance X from fold line P – F and is then transferred to the auxiliary view along the projectors

perpendicular to fold line P – 1. From point B in the auxiliary view, draw a line perpendicular to the

projectors.

Step 5 Width dimension Y is then transferred from the front view in a similar manner, measuring the

perpendicular distance from fold line P – F to point A (or D) of the front view and transferring this

distance to the auxiliary view along the projectors perpendicular to fold line P-1. From the transferred

point A in the auxiliary view, draw a line perpendicular to the projectors.

Step 6 Darken lines A-B and C-D to show the true size of the inclined surface to complete the partial auxiliary

view.