Converting round polylines to circles

[peterklos]

Hi All

 

I use AutoCAD 2005 to produce objects on my CNC machine , I have a project to drill 1000’s of different size holes on a halftone image ( dots) for a large panel.

 

I have converted a half tone image to round circles but they are recognized as polylines in AutoCAD.

 

How do I convert the polylines or splines to be recognized as circles , once they are circles I can then categorize the different diameters for each drill size?

 

I have never loaded an LSP application in AutoCAD and don’t know how to use once loaded

 

I would appreciate some assistance Thanks Peter

[ReMark]

Try exploding one of these polyline circles and see what happens.

 

Why do you ask about LISP? Did you find a LISP routine you want to use for some task?

 

There is an explanation of how to load a LISP routine in the CADTutor AutoCAD FAQ area. Look under Customisation. The thread is entitled How do I load an AutoLISP Routine?

[lpseifert]

Have a look here http://www.cadtutor.net/forum/showthread.php?t=35409&highlight=region

and here http://www.cadtutor.net/faq/questions/28/How+do+I+use+an+AutoLISP+routine%3F

[peterklos]

Hi Guys many thanks , I appreciate your help , the LISP routine works , its now off to drill 20,000 holes

regards Peter