Doug White fired this volley in
:

What size & what inserts are you running? Have you had a chance to try
them yet?


Doug, it's a 4-insert 2" face mill. Uses RPMT 1204 inserts (round, 11-
degree positive rake).

My experience with the head is that it takes LESS HP to mill steel with
it than with HSS or the few brazed-tip carbides I have.

I was milling fresh edges on my mower blades (which work like, feel like
10-18), throwing smoking blue chips while taking 15-thou per pass, and
the little BP "M" wasn't even straining. (clattering a bit, yes, but the
splines are a little worn on the quill and drive pulley).

At about 18-thou, it started throwing burning chips, and still didn't
bog, nor discolor (not even sensibly heat) the work. But I stalled it and
hogged at 22-thou, chipping one insert and forcing me to spin it a few
degrees for a fresh edge. It might have worked on a more rigid machine,
but my old Cincy #2 has got a little lash in it here and there.

I don't have flood coolant on that machine, so I was oiling the work
before each pass with Tap Magic.

I haven't run it on anything but steel yet. My understanding is that the
particular insert I'm using isn't favored for aluminum.

LLoyd