[kendo]

I got a bunch of parts to make out of 19" long 1x3/4" 303 sst bars
they get milled to .89 x .69" then a channel and some drilling

I'm cutting all sides equally to minimize bowing but its still a problem
not so much when I mill one part at a time, but I tried clamping 5 parts in two vises to mill each side 5 at a time with a 3" face mill, but they bowed too much in the cut

like I said, not a problem when I hold one part at a time and turn it 3 times but thats so slow its taking forever. I cut it with a 2" face mill when I do it this way.

also, I could use some help getting a better finish with the face mill
its a kennametal 3.15" cutter with six 45 degree angled inserts taking .05" per pass at 450sfm and .007ipt
I know I can lower the ipt, but goodness that huge cutter looks like its barely moving
so, would you guys use this tool they way I am?
if so, which way would you tweak those feeds n speeds?

thanks,
Kenny