The story
I'm Dan O'Shaughnessy, a project designer at a civil engineering firm. Spending 10+ years inside AutoCAD and Civil 3D, I've noticed a few things that I wish could have been a little better, or been more to my liking.
When AI became capable enough to write reliable code — faster than I could have ever learned on my own — I started using it to build the tools I've always wanted. What started out as personal LISP routines and tools turned into a collection worth sharing with others for free, instead of collecting dust.
Every tool here was built to solve a specific, real problem I encountered. If it didn't make my workflow more efficient, it didn't make the site. You can connect with me and follow my work on LinkedIn. The ultimate free gift I have received is found in Romans 6:23 — "For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord."
What's on this site
LISP Routines
AutoLISP scripts that load directly into AutoCAD. Layers, annotation, geometry, and utility commands.
Python & Plugins
Python tools for batch processing, data extraction, and drawing automation outside the CAD window.
CAD Filters
Color themes for AutoCAD and all Autodesk verticals. Change your entire workspace look with a single click.
How every tool is made
Built with AI
Claude AI writes the code. Being upfront about that matters — you deserve to know what you're downloading and how it was made.
Vetted on real drawings
Every routine is tested in a live AutoCAD or Civil 3D session — versions 2025–2027 — before it goes on the site. If it broke something, it got fixed first.
Free by default
Most tools are free. Premium tools exist where there's genuine extra value — not just as a paywall on things that should be free.
Source included
LISP and Python files are plain text. Read exactly what runs on your machine before you load it. No black boxes.
Blog posts are AI-written too
Same as the tools — the articles are written with AI, not typed out by me personally. Given the name of the site, that shouldn't come as a surprise.
Have a workflow you want automated?
If you're spending time on something repetitive in AutoCAD or Civil 3D, there's probably a script for it — or there will be.