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Must admit, I used to use rubber bands too, mainly in the days when I was able to do 1/72nd scale. I got in to using tape by accident really, when my remaining rubber bands either ran out or perished. Used tape ever since, and find it provides a better hold, without over-tensioning the joints. Main advantage is, on those joints where you can't exert enough force with bands, without over-tightening, you can with tape, by pulling across the joint(s) then tensioning and fixing. It's also often easier to remove afterwards - no fiddling over tail fins etc.