Subject figure shows how to splice a streamlined tube. It seems to be
saying use the same thickness/dimensions as the part being repaired,
saw the trailing edge, force it open, and slip the splice over the part
being repaired. Let's minimize bending the splice material by slipping
it over the strut (in this case, one of the lift struts) from one end
and 'sliding' it into position.

Since the OD of the strut and the ID of the splice material don't
match, the splice will not lie firmly against the strut.

Is this a case where, like a finger strap, you apply heat to the splice
and form it around the strut? Are there any tricks to 'wrapping' the
splint around the strut?- Mike