I made a quick design to try to extend the waist of the Marvel Legends Magneto to make him a bit taller.
I cut the figure in half and glued the printed piece to the bottom section (If I was to do again I would glue to the top).Then I drilled a hole in both pegs and glued a 2mm wide finishing nail in the holes I drilled.If done correctly the waist should still be able to rotate as normal and the belt should cover the 3D printed part.