nothing!
All drawing is a form of projection in itself. If you mean how do you project orthographic shapes to trace then the best way would be to place a light 180 degrees behind the object you wanted to draw. This would cast a silhouette (which is essentially what an orthographic drawing is) that you can trace.
frontal profile horizontal
Orthographic Projection/Drawing is nothing but representing a 3-Dimensional Object into 2-Dimensional drawing. it is a form of parallel projection where all the projections are orthogonal to the projection plane resulting in every plane of the scene appearing in viewing plane so, Another name for Orthographic Drawing is "Multview Drawing"
the importance of Orthographic drawing is a basic understanding of presentation drawing, wherin 3 main views of an object are presented in correct dimension of the height, width and depth.
The use of linetypes on a drawing are used to describe the various features of an object to the person reading the print
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You can find information on orthographic projection at the Wikipedia. Once on the website, type "Orthographic projection" into the search field at the top of the page and press enter to bring up the information.
these projections have dimensions
All drawing is a form of projection in itself. If you mean how do you project orthographic shapes to trace then the best way would be to place a light 180 degrees behind the object you wanted to draw. This would cast a silhouette (which is essentially what an orthographic drawing is) that you can trace.
frontal profile horizontal
orthographic projection
Orthographic Projection/Drawing is nothing but representing a 3-Dimensional Object into 2-Dimensional drawing. it is a form of parallel projection where all the projections are orthogonal to the projection plane resulting in every plane of the scene appearing in viewing plane so, Another name for Orthographic Drawing is "Multview Drawing"
An orthographic projection.
It makes the letter L
Orthographic projection
No, a multiview projection is used for developing a multiview drawing. Multiview projections are orthographic projection where the object is behind the plane of projection, and is oriented such that only two of its dimensions are shown.
1) Some training is necessary before you can draw or read a drawing. 2) Sometimes it's easier to draw the object in perspective view (pictorial view), especially for clients who have difficulties interpreting orthographic drawings.