HELP! can't close polysurface

I know this should be really easy but I can’t seem to make it as a close polysurface for the shoes(I’m following this tutorial) as I was planning to make like an offset hole on the top using shell but it doesn’t work if it’s an open polysurface.There are open edges on the top and bottom. I just started
Heels.3dm (517.5 KB) learning rhino…

Hello - Explode the object, UntrimBorder all three surfaces, then Intersect. Use the curves from the intersection to re-trim the top and bottom surfaces - then Join. That closed up here.


THANK YOU SO MUCH! that worked like a charm :slight_smile: