I am a new user to sharecg.I use autodesk inventor and mechanical desktop.I would like to know what is the best format to post my models in and is the any other autocad user out there cause i can't find anyone posting in .dwg format

Thank you.

dxf would probably be the most open format for you to post. I don't know if AutoDesk does obj?? Does it? But for other AD users the dwg format would be best. I would say make a zip with dwg and dxf, post it under dwg and in the comments note that a dxf format is included (and an obj if possible). That would make your upload accessable to the most people.

 Welcome to ShareCG and thanks for sharing.