How to easily draw rectangular ducts in AutoCAD?
Drawing rectangular ducts in AutoCAD can be a complex and time-consuming process, particularly if you need to ensure accurate dimensions, angles, and offsets. The task requires you to use several commands, such as polyline, arc, circle, and trim, to create the duct segments and the fittings. This can result in a large number of clicks and keystrokes, and it can also lead to errors and inconsistencies in your drawing.
AutoCAD users can make use of a LISP routine to draw rectangular ducts automatically, instead of manually drawing them.
What is the AutoCAD LISP and how do you upload it to AutoCAD?
After you have uploaded the LISP file, you need to type 'DUCT' to activate it.
Specify the elbow type mitered/ segmented/ Radius.
Enter the centerline factor r/w (recommended to be between 0.6 to 1.5).
Specify the start point or width.
Then specify the next point one by one.
You can download the lisp from here.
Conclusion:
With the help of the LISP routine, you can easily and quickly create rectangular ducts in AutoCAD, without having to use standard commands. Additionally, the duct command allows you to modify various properties of the ducts, such as their width, height, offset, and layer.
I hope you find this LISP routine useful and helpful for your AutoCAD projects. If you have any questions or feedback, please leave a comment below or contact me. Thank you for reading and happy drawing!
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