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AutoCAD & Civil 3D Tips

Practical guides, automation tutorials, and workflow tips for engineers who want to work faster.

How to Load a LISP Routine in AutoCAD

Step-by-step guide to loading .lsp files in AutoCAD — from drag-and-drop to making them load automatically every session.

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How to Edit a LISP Routine to Change the Command

Find the defun line, pick a new command name, and avoid conflicts with built-in AutoCAD commands — takes about ten seconds once you know where to look.

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5 Quick Layer Commands to Have in Your Back Pocket

Most CAD users only scratch the surface of AutoCAD's layer tools. These five commands — many LISP-automatable — will change how you work.

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How to Automate AutoCAD with Python

Using pywin32 and the AutoCAD COM API to control drawings from outside the application — no plugins, no subscriptions.

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