Cutting Steel Problems

Good morning, Lately ive been trying my hand at cutting steel. I bought the 112Z nomad bit but the first time I attempted to cut steels the bit broke. I was wondering if anyone has advise on speeds, feeds and type of bits that would help. I understand bits will wear with time but i was only making. 2.5 in oval and the bit broke before the job could finish.

Which steel alloy are you cutting?

Is it annealed or hardened?

Are you using coolant?

Which machine are you using?

What feeds and speeds?

See the appropriate videos at:

Which steel alloy are you cutting? Tool steel, really basic for starter, just stuff I find at home depot. 1/16in

Is it annealed or hardened? annealed

Are you using coolant? No

Which machine are you using? Shapeoko 4 standard

What feeds and speeds? Feed 20.0 speed 18,000 RPM