Is that helpful?
Answered with a tutorial: https://grabcad.com/tutorials/i-m-trying-to-create-a-hopper-with-different-diameters-and-centres--1
Attachmentshopper.SLDPRT, 183 KB
create your planes, create your diameter(s) on those planes and convert entities as needed. Then, use the loft feature to connect the diameters. Is this clear enough? Let me know...
Best of luck,
Not so clear but I got help from the others. Thanks for the response though.!