Profpointy
Legendary Member
The same is true with lathes - you have drive centres and tailstock 'live' centres which are just held by tapers. They need knocking out from the back to get them out (actually on my tailstock it auto-ejects when you wind it in far enough).
I think my own lathe did that at the tailstock taper too. Handy for getting the drill chuck free. Some of my other taper tools and adapters had a slot so you could tap a wedge in
I seem to remember that on the Kango drill we used, to get the drill bit free you had to bash the side of the arbour with a hammer to "bounce" it loose. The guy in charge was very
capable so would have spotted a slot or whatever.