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Line Constraints, WTH?

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    Line Constraints, WTH?

    Can somebody help me understand how lines get constrained or point me in the direction of a good tutorial or post? I can't seem to get a handle on how it works. As an example.....I created a simple mirror family with parameters for height, width and mounting height which flexes without any problems. In elevation I added three angled symbolic lines to indicate the mirror material (typical glazing hatch marks). They are not connected to each other or the mirror geometry in any way. When I flex the dimensions, one of the lines moves as if it is constrained to the frame. Why is this and how do I make it stop? There are other situations that I come across periodically that drive me crazy. Don't get me started on the damn symbolic arc for the door swing, that thing seems to have a mind of it's own.

    Any help would be appreciated.

    Kevin

    #2
    Try grouping the lines or creating a nested family. This way you gain control over the linework, and are able to place and constrain them much easier.

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      #3
      My vote is for the nested family option. Dealing with lines on angles is especially more difficult. Nesting can solve almost any angle problems.
      -Alex Cunningham

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        #4
        You can use groups or create a detail component that can be aligned and locked to the reference planes...
        Michael "MP" Patrick (Deceased - R.I.P)

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          #5
          Thanks, I had thought of grouping the lines and have done that in previous situations. I was able to delete the line that was misbehaving and just copied one of the others.

          What I'm really looking for is some understanding on why lines behave the way they do and how they get constrained. There are instances like I mentioned where I don't want the lines constrained but also instances where I do, like the door swing arc in plan or the dashed lines on cabinet doors to give the indication of swing direction. I have read posts that suggest turning on the automatic sketch dimensions but I don't understand how those dimensions show what is constrained to what.

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            #6
            This doesn't answer your question but I'd consider making a custom hatch pattern and applying it to the mirror material.
            Greg McDowell Jr
            about.me/GMcDowellJr

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