Hi, i have stuck how to make surface smoothing.
what is the tool to sculpture the product. to add or remove parts? to make the diagonal have curve?
please take a look at this videos to edit PolyNURBS
https://www.youtube.com/watch?v=G2lC9saZaYs
or this one, which is very similar to your part.
https://www.youtube.com/watch?v=gUJmxCsXY18&list=PL4In5t4wFo0y4OWJ5ONmLDMTE8AGeFm2y
please take a look at this videos to edit PolyNURBS
or this one, which is very similar to your part.