The companies I have labored in all refuse to provide CAD drawings to anyone but consultants straight involved in the job. I would not push this challenge by using a firm that doesn't want to offer these! i just triedexporting to .ai from rhino, but I could not do 1:one https://griffinajoub.techionblog.com/34103685/how-zwcad-can-save-you-time-stress-and-money