I was hoping someone might be able to comment a situation that has me perplexed a bit.
In the attached file I created a simple bowl shaped object ( It is colored dark green in the file ).
I did a series of projected 2d line drawings onto the surface of the bowl and from there created ‘relief’ surfaces from that ( from the projected lines )
In order to create one single object, as part of the process, I am trimming the surface of the bowl with the relief objects.
The perplexing part for me is that when I use a single relief object and do a polar array around the same axis that was used to create the bowl, each ‘copy’ of the polar arrayed relief object acts differently when I use it to attempt a trim or split action on the bowl surface.
In the file you can see I have been successful with some of the arrayed objects, but there are some cut-outs that are yet finished because the polar-arrayed object won’t work.
Now for the ones that don’t work I can select their edges and using the project command make a ‘new’ edge from which a trim command would work. I thought this meant somehow the polar-arrayed object became separated from the bowl surface which is why it doesn’t work, but in the end I can join polar-arrayed object with the bowl to make one object.
I know this post is a bit verbose, but my main query is more about trying to understand why geometry that is identical works in one case but not the other.
To try and show it more simply as an example; In the file there is an object colored cyan. It is the result of a polar array of the object colored red. The polar array was done ( as I indicated before ) using the same axis of rotation that was used to make the dark green bowl ( which was created by a single profile revolved 360 degrees ).
Geometricaly, the ‘layout’ of the objects are identical, yet I can do a trim with the red relief object and green bowl, but I cannot do a trim with the cyan relief object and the green bowl.
This sort of thing makes it difficult to predict what I may or may not be able to do when planning a workflow in creating an object.
Insights are much appreciated. Thank you
Edit: sorry I uploaded the wrongly save file