AnsweredAssumed Answered

Why does this sheet metal part not work?

Question asked by Jordan Greer on Aug 29, 2016
Latest reply on Aug 30, 2016 by Daen Hendrickson

I'm trying to make a sheet metal part. It's basically a cylinder that mates up perpendicular against another cylinder, so one end of it has a cut that turns out to be sinusoidal when flattened. It starts out as a cylinder, so I sketched a circle with a tiny gap in it to make the sheet metal cylinder. I used radial lines for the gap, so both edges of the cut intersect the center.
Drain outlet ring 1.jpg
I was then able to unfold it just like you would expect.
Drain outlet ring 2.jpg
I sketched the profile for the sinusoidal cut, using a spline and a lot of midpoints. I was able to extrude the cut in the unfolded part, and it all looked good.
Drain outlet ring 3.jpg
The trouble happened when I re-folded it. The cut is gone, and it looks like one edge of the part is missing.
Drain outlet ring 4.jpg

I am confused. Any idea what I'm doing wrong? I have attached the part file.


I also tried extruding a circular cut while the part was in its cylindrical form, but for some reason, SolidWorks didn't want to do that either.


Thank you,