Many woodturning accessories (centers, arbors, etc.) have Morse tapers
with solid shafts and no tangs. Recently, in a junior moment, I put
such a center into a MT2 to MT2 extender. The extender has a tang slot,
but the center's taper did not reach it.
I really leaned on the handwheel to secure a heavy blank. Now I own a
dedicated extender with a built in Nova spur center.
So far heat, cold, WD40, pounding, hammer drill, cursing and sweet talk
haven't prevailed against that reluctant taper. I tried a short pin thru
the slot and into the hole to reach the center's tip so as to use a
drift. To get thru the slot the pin had to be so much smaller than the
hole that the drift canted the pin and it wouldn't budge the center.
Moral: when you insert a taper, be sure you have a way of removing it!
Arch

Fortiter,