Deep slot milling
Milling a block of heat treated 8620 to finish dimension and milling a 1.24 wide slot 2.37 deep using light peripheral cuts. The endmills were A) 1.00 sgs 5 flute , reground to .989 roughing at 120 ipm and B) garr 630 series 3/4 x 3.0 loc reground to .715 roughing at 80 ipm. The material was .25 deep in the vise.