Always wondered, during my walk-arounds, why electrical cables in aircraft looms are tied with knotted waxed string rather than using plastic ty-wraps. (aka Zip ties)
Is it because ty-wraps were not invented when aircraft were first built and the practice has remained, or does the waxed string have an advantage? (It is much less bulky and less likely to catch than a ty-wrap for example).
I ask because the waxed string would seem to be much more labour intensive and time consuming to apply than ty-wraps.