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How to disable "distance doubling" in a sketch?

Question asked by Andrew Brown on Dec 12, 2012
Latest reply on Aug 21, 2018 by Harrison Johnson

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So, I'm in a sketch, and I draw a vertical line a random distance from a vertical edge on the model. When I use the smart dimension tool to display the distance between them, if I drag the cursor to the left, I get an accurate distance, but if I drag the cursor to the right, the distance doubles, and the leader arrow no longer is anywhere near the vertical surface. What is this "feature" called, and how how how do I turn it the heck off? I have absolutely no need of distance doubling, or radius vs diameter measurements, if that's the case...

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Jeremiah Feist Dec 12, 2012 4:44 PM
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I do not know of a way to turn off this new feature - but it should only happen when the line you are crossing is a construction line, not a model edge...
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Justin Strempke Dec 12, 2012 4:49 PM
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If your line is a construction line, it's the same as a centerline. You're right in that case, if you are on the near side to what you're dimensioning, it is the shorter distance, if you cross over the construction line it doubles thinking it's a revolved centerline dimension. If you want to place the dim on the opposite side but reference the shorter side, you can 1) place dim on shorter side, then move, or 2) after you've selected your two items, RMB to 'lock' the dim location/orientation, then LMB to place wherever.

I personally wish SW would differentiate between CL's and construction lines, as it will turn a CL in a sketch to a solid line if you revolve about it (sort of the whole point to dimensioning to a CL in the first place, IMO).
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Dwight Livingston Dec 12, 2012 5:04 PM
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I do not get the "doubling" you describe when dimensioning between an edge and a line.

As Jeremy and Justin said, this does sound like the correct behavior for dimensioning between a construction line and a line.

Dwight
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Andrew Brown Dec 12, 2012 5:12 PM
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Ahh, sure enough, there WAS a construction line along that edge after all!

That said, there really needs to be a way to disable that "feature" since it's a constant annoyance that serves no purpose for me... Even MORE annoying than assembly image quality constantly resetting itself to hexagonal circles...
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- Kris Rowlands @ Andrew Brown on Dec 21, 2012 2:08 PM
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  If you dimension to a centerline, if you drag it one way, you get a "diameter" dimension. If you drag it the other way, you get the "radial" (undoubled) dimension.
  
  It all depends on which way you drag the dimension.
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  - Andrew Brown @ Kris Rowlands on Dec 21, 2012 2:23 PM
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    Now if I could only find out a way to TURN IT OFF.
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    - Troy Peterson @ Andrew Brown on Dec 21, 2012 2:56 PM
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      There is no way to turn it off but there is a way to lock in the dimension so it will not double. Create your dimension as you normally would but before making the last click to set it and when the dimension is the way you want it click the right mouse button, this locks the dimension. If you move from side to side you will not get the dimension doubling, use the RMC to toggle between the locked and unlocked state. This works for any other dimensions when there are two possible solutions to the dimension.
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      - Dwight Livingston @ Troy Peterson on Dec 21, 2012 3:46 PM
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        Troy
        
        Very nice, didn't know that. It is very useful for diameters, where you don't want a linear dimension.
        
        Thanks
        
        Dwight
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        Glenn Schroeder @ Dwight Livingston on Dec 22, 2012 10:30 AM
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        Dwight,
        
        That works for angle dimensions also. For example, if you want the dimension at less than 90 degrees, when it's there you can RMB, then place it where you want without it changing to the larger dimension.
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  - Harrison Johnson @ Kris Rowlands on Aug 21, 2018 3:01 PM
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    Kris,
    
    You are totally right, if the dim is dragged to the right it will double and give you diameter, if dragged left the distance will be radial and normal. After setting the dimension, the value can be moved anywhere and not change.
    
    Thanks for your help,
    Harrison J.
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How to disable "distance doubling" in a sketch?

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