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constrained dimensions

Question asked by Derrick Dry on Jan 21, 2008
Latest reply on Jan 29, 2008 by Charles Culp

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i just upgraded to sw08 and found that my sketches are not being constrained by dimensions that i place on them. all other constraints hold the part but if i dimension a line, i can still drag the end point to a different location and the dimension will update itself. this is very frustrating. i want to determine the dimensions of my part, i don't want sw changing the dimension to whatever it wants. anyone else seen this?

derrick

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Charles Culp Jan 21, 2008 4:41 PM
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Try turning off instant 3D. Does that change the behavior?
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- Derrick Dry @ Charles Culp on Jan 21, 2008 5:20 PM
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  i see what you're talking about but this doesn't affect the operation in sketch mode.
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  - Charles Culp @ Derrick Dry on Jan 21, 2008 5:36 PM
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    Derrick,
    
    can you take a screenshot of what it looks like when you modify a line that is already dimensioned?
    
    The only plausable way I could see that working is if it is a driven dimension, either in the sketch, or in an annotation view. A screenshot might help clear that up.
    
    http://solidmentor.com/modules...ex.php?page=ScreenShot
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    - Derrick Dry @ Charles Culp on Jan 21, 2008 5:44 PM
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      i just figured it out. go to:
      tools
      options
      system options tab
      sketch
      
      there is an option for "oeverride dimension on drag/move". i just unchecked it an everything is working fine now.
      
      charles,
      thanks for the consideration
      
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Carrie Ives Jan 28, 2008 12:33 PM
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If you want to be able to drag your sketch and have the dimensions update, is there a down side to having "override dimension on drag/move" checked? Does this do anything other than allow you to drag to change the size of fully constrained sketches?
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- Charles Culp @ Carrie Ives on Jan 28, 2008 12:58 PM
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  The down side is purely sketch technique, and something that I would never do (although that's an opinion). I often have sketches that have plenty of sketch lines, and when you move a point or a line, other lines/points will move to accomodate. I constrain lines so that they WONT move, and I can adjust the others as required. If they moved too then I would be altering values that I already set, and that would ruin the point of why I constrained them to begin with. So that's my theory, anyway; I suppose someone else could have a work flow that works another way.
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Carrie Ives Jan 28, 2008 1:56 PM
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Is there no way to tell it what values to lock? I did not find a toggle while I was looking around, but did find that it was nice to drag my sketch around and not have to delete dimensions and put them back. I would just like to pick what adjusted and what didn't.

Carrie
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- Charles Culp @ Carrie Ives on Jan 29, 2008 1:03 PM
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  No, I'm afraid it is all or nothing. If I want to move a sketch that is constrained, I will just alter the dimension.
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constrained dimensions

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