7cad Lisp

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This is a collection of 3 nice commands I often use.


1. CA: copy objects in an array-like way.

I like using this instead of the array command. In most simple cases it works. You can create an array of grid lines, or rebars, etc. at various spacing using this command.


2. RA: This is similar to CA command, except now you are rotating objects.



This command is for steelwork. Select purlin lines and enter lapping length. The code will automatically find crossing lines (they can be columns or beams or trusses) and break each purlin at every intersection point, extending each purlin to both sides at a distance exactly equal to your specified lapping length.

More interesting, run this and select purlin lines once again, but now enter the new lapping length. It still works!



  • the spacing between 2 purlins is scaled to your current dimension text height.

  • to have your column or beamlines auto-selected, their linetypes should be continuous.

  • in the screenshot, I lock layers except for the purlin layer. Therefore, I can select purlins quickly by 1 crossing window.

About This Version

Version 1.2.1, 3/29/2023
Added AutoCAD 2024 support.

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  • Very good!
    Kaha251184 Чудин | January 14, 2019 Verified Download (What's this?)


  • Genius
    Diep Khoi | October 25, 2018

    Looking for a tool like Sketchup copy-array. Now I for you!

    Thank so much

  • gwonderful addition to saving time
    Diab Fathy | June 12, 2016 Verified Download (What's this?)

    wonderful addition to saving time

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