I have a .STL file that is a 3D scan of a surfboard. I need a CAD model (preferably a Rhino-file) and for the scan to be cleaned up (water tight and smooth all around). The board is a set dimension of-5'10'' long x 19 5/8'' wide x 2 3/8'" thick. This should be evident in the 3D scan BUT it MUST remain or be in the said dimensions. Guys in the business said this would take ONE hour but they are backed up 3-4 weeks. Who can do this?