Clean up and convert 2D .dxf files to 3D Step files for small chassis. and top. (10" x 6")

Job ID: 32845564

Budget: $250 – $750 USD

Need help cleaning up my 2D CAD files created in PunchViaCad and converting them to 3D files with the Step extension. The objective it to be able to have Sheet Metal builders use the step files.
I do have .dxf files now. And I haven't time to learn 3D. :-)
Related categories: CAD/CAM 3D Rendering 3D Modelling 3D CAD 3D Drafting