Orthographic views - completing missing views?

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Discussion Overview

The discussion revolves around the challenges of completing orthographic views in technical drawing, particularly focusing on how to project features from side and front views to a missing top view. Participants explore techniques, resources, and personal experiences related to this aspect of drafting, which is essential for students in engineering and design courses.

Discussion Character

  • Homework-related
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant expresses confusion about projecting features from side and front views to a missing top view and seeks resources and general procedures for approaching these problems.
  • Another participant notes that there is no unique solution to these projection problems and suggests matching features of different projections to create a 3-dimensional model.
  • Several participants recommend using solid modeling software, such as SolidWorks or Autodesk products, to practice and understand projections better.
  • One participant shares a personal approach of sketching an isometric view based on the right and front views to visualize the top view, emphasizing that practice is key to improvement.
  • Another participant mentions that the part in the example can be machined using only the front and right views, suggesting that this understanding can aid in drawing the top view.

Areas of Agreement / Disagreement

Participants generally agree on the importance of practice and the utility of software tools for mastering orthographic projections. However, there is no consensus on a singular method or procedure for approaching these problems, as different participants share varying techniques and perspectives.

Contextual Notes

Some participants indicate that inherent skill levels may vary among individuals, suggesting that personal aptitude could influence the ease of learning these projection techniques. Additionally, the discussion does not resolve the specific methodologies for completing orthographic views, leaving room for further exploration.

Who May Find This Useful

This discussion may be useful for students in engineering, design, or architecture courses who are learning about orthographic projections and seeking strategies to improve their technical drawing skills.

eterna
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Hi, sorry for this very basic question.
I have just started my course and having some trouble on something that's sure to be a required skill as I progress.

About all I can do is block out the depth and width of the top view, and then I just get confused as to actually projecting the features from the side and front views to the missing top view. Does anyone have some resources to share?

Is there a general procedure to approaching these problems?
 

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The link looks broken.
 
mfb said:
The link looks broken.

I posted it as an attachment now.
 
eterna said:
Is there a general procedure to approaching these problems?
In general, there is no unique solution to the problem.
You can try to match features of the different projections with each other, and get a 3-dimensional model of the relevant surfaces.
 
If you want to get good with projections, play around with a solid modeling program. Buy a student edition of solidworks, Creo, Inventor, etc. They are usually cheap ($100) if not free. You can model simple geometries and then go to the drawing sheets to check out 3rd angle projections.
 
If you're a student, try getting some free student software at http://students.autodesk.com. Autodesk likes getting students hooked on their products.
 
eterna said:
Is there a general procedure to approaching these problems?

I think some people are inherently better at this than others but you really don't need anything other than a pencil and paper to practice this stuff.

The way I worked these out was to sketch an isometric based off the the right and front views. I'm thinking that's what your textbook wants you to do. As you sketch the isometric, you'll start to see the the top view in your head. The hidden line in your example is the main attraction.


It's the opposite approach of deconstructing an iso into an ortho.

The more you practice, the better you get. FWIW, realize that the part in your example can be machined with only the front and right view. If it couldn't, you wouldn't be able to draw the top view, so keep that in mind and keep drawing. You'll get the feel for it.
 

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