Have You Tried: Create Associative Center Marks and Centerlines in AutoCAD

Learning
AutoCAD Centerline

We’re excited to share a new Have You Tried article this month.  It’s all about center marks and centerlines. 

Have you ever needed to mark the center of an arc or circle? How about needing to draw a line at the apparent midpoint between two lines or polylines. I’m sure you have. There are two commands—CENTERMARK and CENTERLINE—that can make performing these tasks easier. With a few clicks you, can place a center mark at the center of a circle, arc, or polygonal arc. Or by selecting two lines you can draw a centerline at the apparent midpoint between two line segments or polylines.   

In this new Have You Tried, we cover how to perform the following with center marks and centerlines:

  • Create a center mark or centerline
  • Create a center mark for a polygonal arc
  • Change its properties
  • Set its default layer and linetype
  • Disassociate and reassociate center marks and centerlines to objects
  • Modify them with grips
  • Reset their centerline extension length
  • Modify their appearance

Learn about creating and modifying center marks and centerlines with the step-by-step examples in the Have You Tried: Create Associative Center Marks and Centerlines topic.

AutoCAD Centermark

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Lee Ambrosius

Lee Ambrosius is a Principal Learning Content Developer at Autodesk, Inc., for the AutoCAD software and AutoCAD LT software products. He works primarily on the CAD administration, customization, and developer documentation. Lee has also worked on the user documentation for AutoCAD on Windows and Mac. He has presented on a wide range of topics at Autodesk University over the past 10 years, from general AutoCAD customization to ObjectARX technology. Lee has authored a number of AutoCAD-related books, with his most recent projects being AutoCAD Platform Customization: User Interface, AutoLISP, VBA, and Beyond and AutoCAD 2015 and AutoCAD LT 2015 Bible. When he’s not writing, you can find him roaming various community forums, posting articles on his blog, or tweeting AutoCAD-related information.

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