So I'm getting into this revolve issue and I feel like I'm missing something because the results are inconsistent. I'm trying to create a semi-circle object below with thin but the thin also creates a centerline on the bottom per shown image.
However, when I tried to create the revolve without the center line like the below image.
I thought I can create a half revolving object without the middle line because it works prior. It came up with pop up that asked the question to close the sketch. I said no.
Then error " Sketch is open, self-intersecting, or intersects the centerline".
I can't seem to repeat what I did anymore. Is there something I miss in the rule of creating revolve? From the picture above, what did I do wrong or not follow? I did what others did per some of the instructions on youtube, like this. Nothing is different on what I did with what he did and yet mine doesn't work. Please advise?
Solidworks 2019 SP4