If the goal is controlling hardware, high-quality free alternatives exist that are modern and safe:

Deep integration with Rhino allows for limitless manual sculpting. Cons

If you'd like to find the right tool for your calculations, tell me:

: A powerful open-source 3D modeling tool with various jewelry-specific add-ons.

What is your for using the software? (e.g., accounting, data science, or legacy file recovery)

Find for getting started with free jewelry software Compare MatrixGold vs. Rhino for professional work