Hi every body
here is the sugestion that our company converts autocad , catia, solid and autodesk 3ds to each other with main format
for example dwg for autocad and 3ds for autodesk 3ds,...
here is the sample of engine produced by our company that we have converted to solid and 3ds .we will send other formats if you minds . free
for converting your projects please contact us . each format 10$
contact us :email@example.com