Starting from a part in STEP format, I want to make a dividing line on several sides to define a transparent area, until the end of the room.
Only when I save this modified pière in IGES format, my separation line that defines the transparent area disappears and this area is therefore modified (either the entire original face is transparent, or some faces are no longer transparent).
How do I keep my dividing line after exporting to IGES? Is it the fact of working on an "imported" part that is the problem?
This certainly comes from the fact that the IGES "sees" that the (over)faces have the same equation and make them of 2 faces cut by the dividing line, a single face.
To remove material, here is a solution (there are certainly others) after making your separation line:
Insert/Surface/Offset...
Select the faces to be made transparent, offset by 0mm and validate.
Insertion/Denting/Thickening
Select the previously created surface and extrude by 0.1mm by choosing the appropriate direction, and deselecting "Merge Bodies"
Insert/Function/Combine, choose "Subtract" by removing the new body from the base one
Example SW15 attached.
Edit: same idea as @gt22 but too long to describe!
I have a similar solution, here is the Sldprt, I will detail the method if necessary...
Good night
Edit there is a simpler way: remove the surface created by the dividing line and refill it. (Maybe not 100% reliable, it seemed to me that I tried without success... and there it works)