This part disappears in other than Shaded and Shaded with Edges mode. This file is originally in 2019v and opened in 2019v but other 2019v files do not have this issue with 2020v. What is the reason for that?
This could be made with 4-6 features... why do you have so many planes and sketches?
I like to see other method as well. Please attach a file of your method.
Ok you need a bit more features.
And you don't need 3D sketches whatsoever. And surfaces... you are not making a plane.
I like to see a part file like original one.
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