When you right-click on "Sheet1" (or whatever your first sheet is named) in the lower left corner, there is a "Copy" command to make a copy of the whole sheet. This copy keeps the column widths.
Good deal, indeed.
HOWEVER, this brings up an idea to make this easier for users.
The software might benefit, and the user too, from a "tool-tip" popping up saying or describing in short order what the command will do.Something like:
"This "Copy" command will make a copy of the whole sheet. This copy keeps information such as xxxx, xxxx, and the column widths."
Something on that order of tool-tip information would let users know what that command will do, etc.
Ease-of-user-use is what I am striving at, that is.