On 2010-08-18, Gunner Asch wrote:
On Wed, 18 Aug 2010 15:58:41 -0500, Ignoramus28889
wrote:

On 2010-08-18, Karl Townsend wrote:
...
That leaves no place for his spindle encoder and a rotating air
connection at the top of the spindle.

Sure it does, his encoder will operate just as well on a hollow shaft as
on a solid one...

Not if its plugged into the top of the spindle with an expanding
arbor......

yep, me thinks Iggy be making a mistake to lose his hollow spindle
just for an encoder. There are ways around it.


I see this thread hasn't mentioned spindle speeders. I use a unit that
mounts just like any other tool and the ouput shaft turns 6X the input
with a set of small collets. Scored mine on the bay for $200 and
change.

That stuff is harder to find in NMTB 30. Lots of it in 40-50 taper.

i

$5 CNC mills are hard to find too..but..as you proved..they are around
G

Good point VBG

i