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   Hello,
I am often having problems trying to REVOLVE ojects in Autocad.  I get error messages like  " cant revolve  intersecting curves" etc. the reason I found out that my 2D polylines  have bits of  double lines hidden in  short sections  of  the 2d drawing. Eventhough on LIST command I   see it as a closed polyline, I dont seem to be able to Revolve the object. 

I would like to know how I could detect where these short pieces of double lines  exist in the 2 d drawing  So that these lines can be erased.  It is very frustating  when you try to revolve a long piece of multi grooved  shaft  and it won't revolve  because there is a tiny piece of double line hiding  in the drawing 

I understand that there is a way of doing it which means going over the drawing  sections  which will indicate - "one object found or two objects found "etc.  but I don't know how to do this.  Thanks in advance. Joferna

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Joferna Members Profile Find Members Posts Groupie Joined: 08.Nov.2010 Location: Canada Using: Autocad 2008 Status: Offline Points: 29	Topic: Problem Revolving objects Posted: 10.Jun.2011 at 03:24
	Hello, I am often having problems trying to REVOLVE ojects in Autocad. I get error messages like " cant revolve intersecting curves" etc. the reason I found out that my 2D polylines have bits of double lines hidden in short sections of the 2d drawing. Eventhough on LIST command I see it as a closed polyline, I dont seem to be able to Revolve the object. I would like to know how I could detect where these short pieces of double lines exist in the 2 d drawing So that these lines can be erased. It is very frustating when you try to revolve a long piece of multi grooved shaft and it won't revolve because there is a tiny piece of double line hiding in the drawing I understand that there is a way of doing it which means going over the drawing sections which will indicate - "one object found or two objects found "etc. but I don't know how to do this. Thanks in advance. Joferna

John Connor Members Profile Find Members Posts Senior Member Joined: 01.Feb.2011 Location: United States Using: AutoCAD 2018 Status: Offline Points: 7175	Posted: 10.Jun.2011 at 12:11
	It sounds like you are talking about the OVERKILL command found in Express Tools. It also sounds like someone has some bad CAD drafting practices if there are lines one atop each other and/or overlapping lines.
	"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>

cisco.irish Members Profile Find Members Posts Newbie Joined: 15.Jul.2009 Location: Ireland Using: AutoCAD2012, Inventor2012 Status: Offline Points: 4	Posted: 10.Jun.2011 at 15:34
	The polyline cannot cross over itself at any point (like a figure 8)

Joferna Members Profile Find Members Posts Groupie Joined: 08.Nov.2010 Location: Canada Using: Autocad 2008 Status: Offline Points: 29	Posted: 11.Jun.2011 at 08:56
	Thanks John, yes this Overkill is what I am looking for . You are correct about the bad drawing practices. I am constantly trying to improve my drawing habits.However, these errors happen when instead of using PEDIT, PL is used and drawn over any vestiges of 2 d lines. Regds Joferna

Joferna Members Profile Find Members Posts Groupie Joined: 08.Nov.2010 Location: Canada Using: Autocad 2008 Status: Offline Points: 29	Posted: 11.Jun.2011 at 09:08
	Hi Cisco Thanks for replying- good advice

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Problem Revolving objects