which provides a data analysis tool in Excel that can be accessed by pressing once the add-in is active. Look for community-driven files on forums like the FreeCAD Forum

Access the functions via the button under the category 'SRS1Splines.Functions25' .

that can also serve as a reference for your own spreadsheet logic. Scribd / Engineering Repositories : You can often find pre-built templates like the DIN 5480 Spline Calculator Guide

This usually means a custom VBA function is missing or macros are disabled.

After opening, look for the yellow security bar at the top and click Enable Content .