, which allows you to copy the code directly or download the file. Official Autodesk Discussion Autodesk Community Forum
: Look for threads curated by Autodesk Expert Elites.
Because AutoLISP routines are lightweight text-based files with a .lsp extension, they are rarely hosted on massive commercial software platforms. Instead, they are typically shared within CAD communities. To download the file securely: autocad tlenlsp download work
: Sums mixed geometry (e.g., thousands of independent lines, arcs, and polylines combined) in a single click.
If you cannot get the legacy tlen.lsp to work, don’t fight it. Use AutoCAD’s built-in or a modern LISP: , which allows you to copy the code
If you followed the steps above but the routine is throwing errors or failing to respond, check these common troubleshooting areas: 1. "Unknown Command" Error
Now you can calculate total lengths in seconds instead of minutes. Whether you are estimating cable trays, landscaping edging, or piping runs, TLEN is a tiny tool that delivers massive efficiency gains. Instead, they are typically shared within CAD communities
Save hours of manual addition during material takeoffs and quantity surveying. How to Safely Download TlenLSP
The use of LISP in AutoCAD offers several advantages, including:
The gold standard. Lee Mac is a legendary figure in the AutoCAD community. His version of tlen.lsp is robust, handles arcs, circles, polylines, and splines, and includes error handling.
TlenLSP is generally available through CAD forums, user groups, and specialized LISP repository websites. Here is how to find and download it: