Square holes are a structural disaster, ships have round portholes for a reason! round dem corners, now.
Don't panic, that's not the final version. The hole will need some fettling in due course, and when it's done it'll be smooth and lovely with no stress raisers whatsoever.
Don't panic, that's not the final version. The hole will need some fettling in due course, and when it's done it'll be smooth and lovely with no stress raisers whatsoever.