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45degrees miter line project dimension b/w top and side views autocad drawing


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can some body share with me some good tutorial or free online document for using mutiview projection using the 45 degree miter line b/w top and side views. Does the miter line has to be 45 DG? can it be 30 DG? Thanks

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Patrick Hughes

To elaborate on and answer your question " Does the miter line has to be 45 DG?"

 

 

This drafting technique was commonly used in manual drafting on a board. It likely has fallen out of favor in CAD drafting, I can't remember ever using the method since moving to CAD.

 

 

The answer is YES, it has to be 45 degrees because that produces equally spaced projection lines of the object that is being created. (You could use 30 degrees but your view will effectively be stretched or compressed).

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To elaborate on and answer your question " Does the miter line has to be 45 DG?"

 

 

This drafting technique was commonly used in manual drafting on a board. It likely has fallen out of favor in CAD drafting, I can't remember ever using the method since moving to CAD.

 

 

The answer is YES, it has to be 45 degrees because that produces equally spaced projection lines of the object that is being created. (You could use 30 degrees but your view will effectively be stretched or compressed).

 

I see, it is very important to have equally space projection line between views. So i will always use 45 dg

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You'll find the topic of orthographic projection covered in any book written about technical or engineering drawing. Walk on down to your nearest library and see for yourself. The Internet shouldn't be your sole source of information.

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You can also use arcs rather than the 45 degree line, or just copy and rotate the completed view and use that to project, then erase that copied view.

 

 

Or model in 3D and never worry about keeping up with the views.

ortho projection 25.PNG

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You can also use arcs rather than the 45 degree line, or just copy and rotate the completed view and use that to project, then erase that copied view.

 

 

Or model in 3D and never worry about keeping up with the views.

 

cool! is the center of arc at the top right corner of the front view?

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cool! is the center of arc at the top right corner of the front view?

 

Yes, I didn't make that clear but you are correct. If the front view doesn't have an upper right corner then you project the top and right sides to where they would intersect.

ortho projection 25b.jpg

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