Drawing scale call out for isometric drawings
Drawing scale call out for isometric drawings
(OP)
What is the standard for showing the scale on a drawing that has only an isometric view? Should the scale be the cadd generated scale, or should the title block be changed to show "NONE" for the scale? And for drawings that have orthographic views, and an iso off in a corner somewhere... should the iso contain a label that says "SCALE: NONE". Are iso views considered to be to scale even though the cadd program has created them as foreshortened?
Thank you in advance.
Thank you in advance.





RE: Drawing scale call out for isometric drawings
Chris, CSWA
SolidWorks 14
ctopher's home
SolidWorks Legion
RE: Drawing scale call out for isometric drawings
Tunalover
RE: Drawing scale call out for isometric drawings
If your drawing actually is isometric, you can measure off it with a scale, and you need to show the drawing scale. If you just did a 3D view like I generally do, showing the drawing scale is nice, but not necessary (n3)!
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JHG
RE: Drawing scale call out for isometric drawings
RE: Drawing scale call out for isometric drawings
If you draw a sphere 1 in in diameter in SolidWorks, what size the sphere will appear in iso view?
RE: Drawing scale call out for isometric drawings
so the question becomes... Should the iso view have the notation "Scale: None:" below it?
RE: Drawing scale call out for isometric drawings
Foreshortening is an accepted of showing iso views (per ASME Y14.3-2012). As for scaling dimensions from the drawing, it is almost universally forbidden (though of course it does happen). One solution (to what shouldn't be a problem) is to label the views as "FORSHORTENED ISO VIEW" instead of just "ISO VIEW".
The scale should still be included if different from title block scale.
“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV
RE: Drawing scale call out for isometric drawings
From the attached I can see that the red lines are exactly the same. Who told you your iso view is out of scale?
And what happened to the sphere?
RE: Drawing scale call out for isometric drawings
It's a waste of time given the rarity of anyone getting hold of a drawing reproduced at any particular scale.