I take it that there is some tongue-in-cheek in your "print" statement?
No - I don't see no stinkin' print...
I ass_u_me that you have 25-26" of daylight under the spindle?
18" part?
The shortest holder that I can come up with is:
Allied drill body #21030 is a "Stub Length" holder, but has a 1.500 strait shank.
It has an OAL of 7-39/64"
with an under the shank dim of 4-59/64"
The shank is 2-11/16" long x 1.500 diameter.
http://www.alliedmachine.com/searchResults.aspx?itemNumber=21030s-150f
Guessing that you don't have room for a 3" projection BT holder, you could turn the shank down to 1" and use a stub length BT holder.
OR - I called AMEC to see if they offer anything better suited, and they said that they could turn the shank down to 1" as required for you.
There would be a "center" (1/4" pipe tap) in the shank that a guy should be able to stuff it in the lathe (OD grinder?) and peel away. That will only leave you a >1/4" wall so you may want to feed on the low side?
I don't think that you can get a 1-1/4" stub length holder in the "BT-40" size?
If you have 30" of daylight under your spindle, then you can prolly go with standard tooling.
I dont think I want indexable carbide drill? not enough H.P.?
You don't think that you could pull that?
They cut free'er than a spade. Of course you wouldn't have the help of the gear-box like you would the spade...
???
18 inch dia. with maybe 12" idX1 3/4 thick, big washer 1 3/4 thick, I am drillin thru 1 3/4 on a B.C. eh?
B.C. ???
Between Centers?
British Columbia?
Are you puting one hole/part, or making swiss cheese outta this thing?
A Google pulled up limited hits on BT40 Stub 1.25", but it is listed here:
http://www.basstool.com/PDF/CATALOG/1052-1113.pdf
Briney (Bad Axe, Mich) lists a BT40 1.25 shank x 2" guage length. (At least near as I can tell from their web page)
https://mrc.geminigroup.net/apps/MRCBRINEY.I01102s?slnk=1&WIPRDL=37
A stub length will still prolly be a 1" guage length?
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