I know people always ask about cad to .stl conversions, but my question is opposite to that. I want to convert from .stl to Cad. The reason why I want this conversion to take place is because I have this design here, and I have a cad program, like say rhino. So now I want to make few changes and add sizes and holes, but I only find it best and easy to do that in some Cad program and the quality is better too. I've searched most places but didn't find any descent or legit product. Do you have something in mind? Thanks.