Hi.

When i render the 3D image thru Revolve function, the bottom surface is missing.

The item i am drawing is a flange.

Picture 1 is the 2D drawing with taper (or pre-tilt) at 0.7MM

Picture 2 is the 3D image viewed at the upper side. This is OK.

Picture 3 is the 3D image viewed from the lower side. This is the error. The surface is missing. When i generate the 2D drawing document and used section to view the surface, it also has the same error. When i increase the pre-tilt into 5MM, the 3D image is fine.

Can anybody help me with this?

Message was edited by: Jonas Tampus