what kind of tool to use

[gorby]

Hi I like to engrave letter on 50 Rc H13 ,letter should be no more then .010 wide and .005 thick,what kind a bit I should use .I will do ti on CNC mill up to 7500 rpm.thank You

[03clipse]

i use a #0 center drill works great

[gorby]

Thank You

[gibbsman]

A 1/16 or 1/32 ballnose endmill would look good as well.