Did anyone can teach me how to build this surface?i tried to build this by split and filet.however it does not look the same.Thanks so much!Attachment is the file that i used solidwork 2019 to build
Thanks so much! Clear and problem solved
Andrew Jackson method is good but bit advanced method difficult for inexperienced people. Try to understand it.
Yes, all good. I do not see the problem with showing other methods even if they are more complex, especially if you get a result that is more in line with your design intent.
There is some subtlety to the surface in the photo that is vital to the form. The spline undulations are even and the surfaces are not flat between the splines. Here is another way to approach this. It'll be more work to apply this to your circle-elliptical form but entirely achievable.
it is a model of using cylinder as a fondation, i think use extruded cut is ok.
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