Drawing: 4 sided cone, correct dimension of the tangent length of the sides

wolfgang_maier

I tried a drawing of a 4 sided cone. I cannot get the correct dimensions of the tangent length of the sides.
The drawing only shows the orthogonal distance between top/bottom lines.

Here is a link to my document:
https://cad.onshape.com/documents/5b630a8a8e045370a421fedb/w/e173b971cb5828812ae651c8/e/0638323d3e7aafb0f2f1e9db

Jake_Rosenfeld

@wolfgang_maier

It looks like you found the correct callouts here (I checked with the measure tool in the part studio and the 219 and 190 look correct for the two different sides):



Did you figure out your issue or are these values still unsatisfactory?

wolfgang_maier

Jake_Rosenfeld said:

@wolfgang_maier

It looks like you found the correct callouts here (I checked with the measure tool in the part studio and the 219 and 190 look correct for the two different sides):
Did you figure out your issue or are these values still unsatisfactory?

No, i just corrected the wrong values by hand.
The problem is that dimensions are not correct in oblique views.
I posted change request!

Jake_Rosenfeld

Hi @wolfgang_maier

Please vote on the following improvement request for 'true dimensions' to help us prioritize this work:
https://forum.onshape.com/discussion/8519/support-of-drawing-dimensions-in-oblique-views-true-dimensions

What you're seeing in all of those cases is the 'paper space' distance of the projection of the view in question.  For the side on views (the ones showing the vertical distance), this is usually what is desired, but for the oblique views it's a little less useful.

EDIT: Oops! That's your IR already.  Thanks for logging it!