Auxilary Views

In this CAD tutorial, I introduce and explain the need for Auxiliary Views , which are essential when a part has features on an angled surface that are not seen in their true size and shape in the standard orthographic views (Front, Top, or Side) [01:04]. To create an auxiliary view, I show that we must project lines perpendicular to the angled surface's edge, allowing us to look straight at that face [01:26]. I demonstrate the process by first drawing a front view and a partial top view to save space and then manually projecting the points from the inclined surface along the perpendicular lines [04:13]. The crucial measurement for the auxiliary view's depth is taken directly from the adjacent view (the top view in this example), ensuring the true size of the feature, such as a circular hole, is represented [04:59]. I also briefly mention Secondary Auxiliary Views, which are required for more complex parts where the surface is angled in two principal directions [07:43]. Video Chapters [00:40] Explaining the core principle: Standard views are selected for being the "most descriptive." [01:04] Identifying the need for an Auxiliary View when features, like a hole, are on an inclined plane. [01:26] Introduction to the projection rule: Projection lines must go at an angle (perpendicular to the inclined surface). [03:37] Explaining and implementing a Partial Auxiliary View to avoid drawing unnecessary geometry. [04:13] Implementing a Partial Top View to save drawing space. [04:30] Demonstrating the projection of lines perpendicular to the inclined edge. [04:59] Explaining how to take the depth measurement from the adjacent view (top view). [07:43] Introducing the concept of a Secondary Auxiliary View for surfaces angled in two directions.