Go to a local technical college with CAD classes and meet with an instructor. They are always looking for new projects for the students. If they have a 3D printer, you might even get a sample cover for free ... 
Its a good simulation of a real-world engineering task, expanding an existing package to accomodate a larger component ...
Its a good simulation of a real-world engineering task, expanding an existing package to accomodate a larger component ...
