I'm running a BP Series II Interact 4 and was milling some hot rolled steel bars. I had to cut a 1.1880 deep channel, .333 wide and was using a .025 offset cutting saw with carbide ends. I had the 1.5 X 1.5 steel jigged up and was milling the channel at a 150 RPM's at a 8 feed rate and taking a 0.0250 depth of cut. the problem was that it took almost 2.5 hrs of milling time to cut to the depth. I tried running at higher RPM's (300) and a 14 feed rate but this burned the blade. Not having much experience working with steel I was hoping that I could get some advice as to the proper speed and feed rates to get a faster work time. I went thru 3 cutter blades to cut just 8 units. the cutter blades were 5 inch diameter.

thanks in advance for the help.

ben