How to create closed polylines, constantly.

[madisalbert]

Hi, easy question, but im finding it increasingly difficult to draw closed polylines. I think that i have done everything right and then nope.

My process- i draw single center polyline, add arcs or fillet them, then pedit-join and then offset to either side and then close with pl's and then pedit-join everything together to an area without the center line of course. like a road pavement, but after joining sometimes it will not become a closed pl.

it helps to explode and then join (several times) but not always, i have also tried redrawing them and making 100% sure every line is connected, but still nope, what am i doing wrong? 

everything else depends on them being closed pl's and im here who cannot connect simple dots.

[j.palmeL29YX · Accepted solution]

Did you try the join command (instead of pedit-join)? 

Also you can test if pedit->multiple->join does the job?

If that doesn't help, can you post a dwg file please with such a not "closeable" geometry? 

[TheCADnoob]

Without see what all is going on, its hard to tell you where the problem may be. 

Are you using OSNAPs?

You can close the polyline with the PEDIT command as well as in the properties palette. 

Something else you may be able to try after you explode is running the OVERKILL command and see if it helps. 

[Kent1Cooper]

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@madisalbert wrote:

.... i draw single center polyline, add arcs or fillet them, then pedit-join and then offset to either side and then close with pl's and then pedit-join everything together ....

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I have a routine that does the parts following your joining the center-path into one Polyline -- the offsetting both ways and connecting/joining the ends -- called [appropriately enough] OffsetBothSidesClose.lsp, >here<.  See whether that succeeds in some situation(s) where you process doesn't.  If not, post a small sample drawing.

A possibility:  When it doesn't work, is the center-path all in the drawing plane, or does it vary into the 3rd dimension?

[madisalbert]

Thanks, just JOIN seemed to correct it.

Pedit and setting manually from properties didnt fix it, acad still knew it was not closed.

[AVCPlugins]

In addition to all the above solutions, there is also a special plugin that solves all conceivable problems with closing polylines: AVC Outside Loop