Changing minor axis of ellipse

Answers

• Jake_Rosenfeld Moderator, Onshape Employees, Developers Posts: 1,646

  April 2017 Answer ✓

  Uli,
  
  You can use the 'dimension' too to change either axis of an ellipse after the fact:
  
  
  
  https://cad.onshape.com/documents/86685578bcd619bb9bff3e52/w/f178be10db8482c12d286a5d/e/47bc412ef25dd5d32780886b
  
  https://cad.onshape.com/help/Content/sketch-tools-dimension.htm
  

  Jake Rosenfeld - Modeling Team

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• dbaarda Member Posts: 9 ✭

  August 2022

  How do you dimension the angle of the major (or minor) axis? I eventually figured this out myself but I couldn't find docs on this.
  
  1. Put a horizontally or vertically constrained construction line through the centre of the ellipse.
  
  2. Put a diameter or radius construction line on the ellipse's major axis. When you select the line tool a square box will appear when you are pointing at the apex of the major or minor axis on the ellipse edge and starting/ending the line in that box will constrain the end there. You can put the construction line from apex-to-apex across the ellipse diameter, or from apex-to-center for the ellipse radius.
  
  3. Put an angle dimension between the horizontal/vertical and major-axis construction lines. Select the dimension tool and click on each line (ignoring the length dimension that will appear after selecting the first line) and then click where you want to put the angle dimension.

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• steve_shubin Member Posts: 1,066 ✭✭✭✭

  August 2022

  dbaarda said:

  How do you dimension the angle …
  

  You did good work in figuring out how to get that angular dimension !!
  
  Here’s a couple more ways ——
  
  You could dimension off of the EDGE of a plane or face
  
  
  

  
  

  
  

  Or you could dimension FROM WITHIN THE FIELD of a plane or face
  
  

  
  

  
  

  
  

  
  

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