create a editable polysurface from the mesh using "meshtonurb"
the command creates a polysurface copy from the mesh
delete the original mesh
generate a 2D curve outline from the mesh that we can later use for drawing a new model
the outline can be created from each viewport to give you an orthographic like drawing to re-construct a solid model.
explode the curve outline so you can modify the outline if desired
Here are a few pics of how I start fresh in building a "clean" model in Rhino from a mesh. The intent is to use the mesh as a starting point from which to modify and build something new. Adream and I have been taking about the inability to modify the mesh without turning it into modified "garbage" file. I suggested this route of building anew. I just wanted to show this visually for our students who may be modifying things in the weeks to come. They are all new to Rhino so I think this might help them. In this case I took Peter Binkley's Talon hand that Ivan had modified to be slightly larger. I'll post more in coming posts.