Hi All. I'm trying to modify a model done someone else using Rhino and modify it for my needs and of course trying to learn at the same time.

Here's the part I'm working with which as a number of problems:



There's a couple issues with the part. One is that it's missing the top. My methodology for that is that once I fixed the other issues, I can select/create a closed curve along the top and then run "planar" on it.

?is this a good strategy?

Before I can do that I need to fix two other issues. One is that on one of the faces, this one:



It extends out past the edge of the part, making patching the hole a problem:



?What the best way to address it? Is it to trim it (not sure how) that or create a new face that doesn't exhibit the problem?

Finally, I have the hole (actually two) to fill. I have to two strategies for that. One is to (once I've created the top), use "N-Sided" to create a patch. The other would be to create a grid and then use "Network" to create it.



?Is there a better, more MOI way to do this?

Thanks in advance.
Scott