Look for the HSM machining of the round central pocket in the beginning.
Here we have a 12mm 6 flute Coated hi-performance endmill, cutting 1" deep at 0.047" (10%) rWOC.
at 10000 RPM and 300 ipm feedrate. the chipload works out to be 0.005". Material is 4140 pre-hardened steel.
Impressive isn't it?
Those results have been achieved with uber-expensive BlueSwarf tap-test technology.
This is one video that caught the eye of one of my HSMAdvisor trial users:
Being a geek and wanting to help the user make the right decision I immediately punched the numbers into my HSMAdvisor app.
Here is what I've got:
Attached file: HSMAdvisor_at_10000.PNG