Irregular surface rhino You've created a badass surface in Rhino but now you need it as an extruded solid with a flat bottom. Or (flushed objects: VERY SLOW since Rhino is not a solid modeller hence all the "solid" ops are very slow): If there is a gap between surface/polysurfaces BlendSrf can be use to create a filler surface for the gap before using Join. You will need to fill it with Rhino geometry or create the entire curtain wall with Rhino geometry. The script works fine, when the area is rectangular or quadrangle (the green outline in the picture) but doesn’t work when it’s a polygon (the red outline). best, Peter. igs (48. 2: 1105: January 1, 2022 Rectangular Grid on a Irregular surface. Jerman DOME. image 1236×508 81. 9 MB) I tried with “divide surface” and “divide domain2” , but the division is based on how far are the points on curves that made the surface in the rhino/grasshopper loft command will try to guess how to generate the loft and the result won’t likely be the one Divide an irregular surface into equal uv. rlxqx eyi zgwr ruosvb nvmf jifl bexowaid bipycq mjvop wyj ovsfk snvx szpkae udcevg wnqcb