I am having trouble finding the right feed and speed for a 60 degree 1-1/2” single flute countersink for my haas mini mill.
Material is 1018. There is a 13/32 hole that is pre drilled. I am having to go about 1” deep with the countersink, bringing the largest diameter to 1.2”.
To be safe I am currently running 300rpm and .5” IPM. It’s putting a high load on the spindle and surface finish isn’t good. Any help would be appreciated. Thanks
Material is 1018. There is a 13/32 hole that is pre drilled. I am having to go about 1” deep with the countersink, bringing the largest diameter to 1.2”.
To be safe I am currently running 300rpm and .5” IPM. It’s putting a high load on the spindle and surface finish isn’t good. Any help would be appreciated. Thanks