When trying to set a dimension between two lines, it forces angular dimension, although the lines parallel

[danielhibner55]

Its happen to me once in a while and I cant get it. Here is an example:

Notice how the two lines are parallel but when I try to make a dimension between them it making an angular dimension of 180 degrees (driven dimension), so I can set the distance between the lines unless I pick points (which isnt what I want).

THANKS IN ADVANCE!

[AEtzkorn]

You may need to increase your angle precision in your measurement, at 2 decimal point it may show up zero but if you go out to 4 or 5 it may be non-zero.  Or you could add a parallel constraint between the 2 lines you are trying to dimension.

[danielhibner55]

Hey brother thank you. As I said, they ARE parallel:

[dan_inv09]

Just because adding a parallel constraint would "over-constrain" them does not necessarily mean that they are parallel already.

What version of Inventor are you on?

We recently (finally) upgraded from 2023 and I'm trying to remember if it was before or after (or both) where I experienced this and had to resort to dimensioning to points (which is not what I wanted).

Do you have a file and/or could you recreate this so that you could attach something that would let Autodesk see that this is happening and maybe they can get to work trying to fix it? Thanks.

[MKE_Howard]

Hi @danielhibner55, strange behaviour. Maybe it's a bug but the more probable cause is that the lines are not parallel. To verify, like @AEtzkorn said, increase the precision in your measurements. Should be all zeros. 

If it's not all zeros, I would delete any constraint on that line that could affect the angle. Maybe its the rest of your sketch thats problematic. Then add the angle dimensions at 180degres (it shouldnt be a driven one if you deleted any constraint that affect the angle) Let me know.

[johnsonshiue]

Hi Daniel,

It doesn't look right to me. Please share the file with me directly at [email protected]. I would like to understand the sketch dimensioning issue better.

Many thanks!

[danielhibner55]

Thank you. They are parallel, even to the most accurate precision. Its strange, but deleting and sketch the lines again solve it.