Question:
When creating a new part in RSECTION 1 using all the boundary lines, why do I get an error saying that the lines are not closed?
Answer:
The line selection is incorrect, as all lines have been selected.
First, you need to create the line by selecting the outer boundary lines only (1):
Then, you have to select the tool for creating openings from the boundary lines (2):
Each boundary line representing an opening can be selected one by one.
