There's a difference between lowering end mass and lowering weight. Even so, you can certainly lower weight (and end mass) on the tip end of the shaft by boring out the first several inches.
I'd venture that traditional shafts had longer (and threaded) ferrules because the glue of the day sucked.
Yeah bore holes in the front of the shaft are meh 60 years old...laminated shafts about the same possibly little older (neither mainstream for Ed)
Nope nothing wrong with the glue...and threaded that came way late in the game threading ferrules is a modern practice. Longer ferrules were also past ww2, you’ll never find an original ferruled cue that is long (first plastics were black...usually about 3/4”). Ivory ferrules were always installed longer to prevent cracking of the material. Glue is pretty inconsequential to a light compression fit of a sleeved ferrule.
Lastly the whole “bad glue” well is venture to say most must be referencing wood glues which are trash as nothing sticks to them once applied and they don’t even stick to themselves after that upon repair. Like that chair your uncle fixed....it broke again, then again so in came a screw hahahaha
. Horsehide is very workable, removable and it doesn’t make the surface irreparable in the future. Lot of fine work from cues to the boulle marquetry furniture Made for dat French king Louis numba one foe.
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