SO here is a blend attempt.Between each revolve is a blend that works well, but your left with that middle hole. Is this a part we cant do without "N-Patch" or is there a way to fill this. I was thinking even of putting in a tiny little surface in the top center and using blend on the four edges again, then just having the little tiny thing at top be a bit rough (Or even fill it with a new revolve tent, like a vent top).

Anyway, seemd close except for this last part which it seems like you were talking about already.

Hi Burr, yeah it is that center part that is the problem. Just a regular Blend is not quite good enough for that area, because Blend makes a smooth connection between 2 different sides, but in that area you want a smooth connection between 4 sides, not just 2.

You can fill the hole with something like Network or Sweep, but it will have a crease there instead of it being a smooth fill.

If you can make the hole to be a pretty small size then the crease may become difficult to see though.

But yes, filling in holes like that with a smooth surface is what an N-Sided patch tool would be used for, there is not really another tool that does the exact same job.

- Michael

Got it! Thanks.