This Dissection of a ball bearing was the very first project to test proficiency of hand sketching skills as an engineering designer. It requires each individual to create structurally and dimensionally accurate hand drawings for each component of the bearing. The drawing for each component must contain three standard views with dimensions clearly and correctly labeled. However, since the ball bearing has a circular shape, the side views and the front views are exactly identical. Therefore, I reframed the problem into having all the necessary views to show the dimensions of the ball bearing. By doing that, I was able to eliminate one of the repeated views from the drawing, instead add another important section view to each drawing in order to show the internal dimension of the bearing. 

Having an additional section view is crucial when an internal, hidden feature presents because no dimensions should be assigned to hidden lines. In case of drawing for the outer race, in absence of a section view, necessary dimensions will be missing for the internal races and the drawing won't be completed. Nevertheless, when encountering some complicated components like the retainer of the ball bearing, a scaled or magnified detailed view is useful to clearly show the features. Even though section views and detailed views are not required by every standardized drawing, including them in the drawing as supplements will help construction stage of the component to some degree. 

 

For an exploded assembly view, all the components are drawn along the center construction axes. Again, this exploded assembly view is also used for construction, showing how the entire component is assembled. 

 

With more common use of modeling software, proficiency of hand sketching skill is less required. Whereas, knowing and grasping hand sketching is still deemed as a necessity for engineering designers because it is not only a handy skill, but also a habit of keeping work neat, organized and accurate. These traits are way more important to engineering designers.