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Dear Experts,
I need a lisp for deleting the outside diameter of the thread holes! the outside diameter can be a circle or an arc as Figure above! M10 is only an example!
Thank you very much for your time!
Delete the outside diameters of the thread holes!
Do you really need a lisp to perform this action? Autocad is primarily a drafting application, and this task can be easily performed bi using quickselect. Use layers to distinguish elements of your drawing, turn them on or off as needed.
In case when you have multiple holes of same diameter you can dimension them vith leader (mleader) and write for
example 4 × M10. It will leave more space for placing other dimensioning object, and as a result drawing will be easier to read.
Miljenko Hatlak
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What would you expect the User's steps to be, and the routine to do with the results? Should the User select a whole area, and have the routine find all Circles and Arcs within it, then look for those with common center points, and where it finds some, keep the one with the smallest radius, and delete any of larger radius? Or some other procedure?
Kent Cooper, AIA 
