On 2016-03-12, DoN. Nichols wrote:
On 2016-03-11, Jon Anderson wrote:
On 11/03/2016 12:13 PM, Ignoramus26799 wrote:

http://igor.chudov.com/tmp/huge-jig-borer/

That looks too nice to scrap!

I agree!

What voltage does it need to power it? Do you have that voltage
in your shop? (Certainly more than a typical home shop could handle,
but you've got an industrial building. :-)

240v 3 phase

The spindle looks like it *might* be a variant of the
quick-change spindle that is on my Bridgeport BOSS-3. It takes the
Erickson 30-taper NTMB tool holders -- this one might take 40-taper or
50-taper. Anyway -- about a quarter turn of the lower ring locks up the
holder in the spindle or releases it. You would need two hook spanners
(you may have them with your list of things which came with it.)

I don't see the V-troughs which would accept the measurement
rods (a set of incremental inch multiples, plus a pair of micrometers
covering something like 2"-3" which are added up to set the distance
between a stop and a moving part of the tables *very* precisely. But
since this has the DRO, it probably can be set equally precisely with
less work needed. (FWIW, I have a set of those rods and micrometer
heads -- and may someday make a V trough for using them with my lathe.

It is a special taper, that I know

Willing to ponder adapting a proper milling head in place of the boring
head? Heresy I know, but would beat scrapping it.

Doesn't sound like an easy job, looking at the images.

Enjoy,
DoN.