Problem with shell and other newbie questions

 From:  Glenn Claes (GLENN)
6683.1 
Hi everyone,

I'm having a problem with this object that i'm drawing.

-I made a revolve of an ellipse and trimmed some curves on the surface.


-Then i selected these cut out shapes and performed an inward shell.
I removed the outer shell to get the result i wanted.
Result, one side is perfect, the other deformed.



My conclusion for now is that the left over line (arc) of the original shape is the cause of this problem.
However i'm not able to remove this line before or after trim or inward shell.
How do i solve this?



As an additional question.
I have noticed that when you join lines and for example revolve them, you will still get a surface which is cut into 2 surface sections
Is there a way to solve this?
Mainly to keep my drawing clean and not to have any unnecessary lines etc.


.

I also noticed that when you join or rejoin separated surfaces, that the seems remain.
Is there a way to rebuild the surface or some other command to make the surfaces really into one surface?



As a result of this, i noticed that when i use the flow command that i can not select the entire joined surface as a target surface.
Altough the surfaces are joined together and can be selected as one surface in order to move it or something.
This does not seem to apply when using FLOW.

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