To to nicely fill in these holes

after exploring all options i am at a roadblock, how do i nice fill in these holesRIM.3dm (203.1 KB)

There’s no easy way to fill this. You needed to start this model with the center resolved first. Is it a domed, concave or planar center? There are some really good rim tutorials out there.

As Jason said, this is pretty hard if unknown what the design intention is. I´ve just closed it using the information available.

  1. Created the red curves by extracting isopharms along U
  2. Created the light green blend curves between extracted curves
  3. The dark green surfaces can then be made with NetworkSrf
  4. Splitted the dark green surfaces in half along U by isopharm direction
  5. closed the remaining hole with the brown patch using tangency option

RIM_2.3dm (225.5 KB)



clement, this is what i want!!! you are a genius! i love this method! man you guys are the best!!!i would have never thought about this, thanks a million

There’s always the good cheat-


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How did zou accomplish this Pascal_

Hi Mitviz… it was at least partly in jest - just cover the difficult part with a detail… but, I made some simple loft surfaces and used MatchSrf as needed to get the visible parts cleanly aligned. File attached.

RIM_2_Cheat.3dm (266.7 KB)


Thanks Pascal, there is always some tricky way to do things in rhino, so sneaky:)

I keep having the same issues, i have another hole to close but i cant seem to figure it out, the center needs to be smooth like in the image but i cant seem to wrap my head around it in rhinoto cover.3dm (1.2 MB)

Hi Mitviz- in this case, if I understand things, I think I’d make two little transition surfaces to a planar center - I don’t know if I made it the perfect size here - and then use some MatchSrf to get everything trued up and ArrayPolar.

to cover_PG.3dm (928.2 KB)


Thanks again Pascal! this is very close to what i am looking for, i would have never thought to do it this way