no. it's not possible. do you have a sketch of what you want?
Yes. Rod could be separate from end elbow piece. It just slide into elbow. I did take rod out and use tube cutter to cut to fit so I could screw base to real wood stud.(not dry wall) You could swap with other rigid metal pipe but it will look different from elbow (not same material
Yes it can be cut
approx. 5/8" OD