I created an addon to import STEP directly into Blender. https://gum.co/stepper  It’s written using the OpenCASCADE library. Note: it currently supports only STEP, no IGES.  If you have any comments, let me know.   Frequently Asked Questions – Please look here before asking a question in the thread   Q: How to get support  A: According to Gumroad you should be directly able to reply to the receipt email https://customers.gumroad.com/article/204-get-to-know-your-gumroad-receipt  Send me an email ...