Can someone help me on how to model this. I am basically trying to model the same thing as in the image but having the outer/lower perimeter of the polysurface follow the circle. I know how achieve this with subd but really like to know how to model it with nurbs. The current corner solution was made with a blendsrf to achieve curvature continuity.
for clarity the pink perimeter should be on the green circle.
given are the upper rectangle (red)
the lower circle (green)
the profile curve (blue)
Split the rectangle and circle using your profile curves to make the individual colored curves, then use NetworkSrf on the red + pink, and blue + pink curves (separately) to build the surfaces. Then ArrayPolar the two surfaces. Then Join if you want.
you are dealing here with a conversion froum round to edgy, that will leave you with pointy edges even if you try to smooth the rest of the edge so it not a good design choice. maybe filet the square profile just a little.
either way you can use BlendSrf for this (use option Chain Edges). maybe loft the lower circle to a bigger circle then you have a good tangent surface to blend to.
left with slight fillets on the square profile before i extruded it, on the right without the filet.
Seems to be fine in most cases for representation purposes. but its not really working for me here the part will be 3d printed and red + pink surface is making some weird bump where its tapering. but thanks for the quick answer.
