Gunner wrote:

If anyone needs a right angle attachment for a BPort, I think one of
my customers has one that he doesnt use. I might be able to get it
from him reasonable. Not free, but reasonable. Knowing him, it will
have the arbor and support.

Note that Bridgeport made several arbors for their RA attachment. Each
arbor has a uniquely-sized collet which is used in the outboard support
casting. Many people offer these arbors for resale on ebay, but few offer
the collets, and you can not use the one without the other. Similarly,
many of these arbors are offered without their arbor nuts and these should
be devalued accordingly, as the arbor nuts often have LH threads and are
hardened and ground very precisely so they aren't trivial to reproduce at
home.

Finally, I don't believe you can ever do very heavy milling with a BP RA
attachment. And for anything even remotely approaching heavy you will need
to rig flood coolant.

Regards,

Grant Erwin
Kirkland, Washington