Electric Comet wrote in news:mij2as$2j3$4
@dont-email.me:

On Fri, 08 May 2015 14:25:23 -0400
woodchucker wrote:

So there is the mt taper for going into the spindle,
and then they is usually but not always a J taper or sometimes other
tape for the MT arbor to the chuck.

There are wedges used to pop them apart. You can buy the reasonably.
They are meant to remove the part w/o destroying the chuck. The
pressure is put on the landing around the abor, not on the moveable
ring that tightens the chuck.

I think they can be had for around $16 ..

do the wedges go inside the chuck jaws

looking at the chuck that is my best guess


this drill press was a tool rescue
it was outdoors
it had fallen face first at some point

i cleaned the MT2 as it was falling out and could not get a
firm purchase

but i want to dismantle the chuck end and clean it also

You don't want to do what you're wanting to do. Jacobs
taper really don't want to be taken apart.

But anyway - the wedges go between the top of the chuck and
the shoulder on the arbor - assuming there is a shoulder on
the arbor, which there often isn't.

If there's no shoulder on the arbor, you turn the chuck
upside down and drill a big hole in the end, and use a
drift to drive the arbor out. Or better yet, a hydraulic
press.

John