The shop I work for has asked me to look into getting ceramic inserts for some of the jobs we are running on our old Wasino lathe. I know nothing about ceramic inserts other than coolant is not needed. I am under the impression that the lathe will be needing to spin damn fast to generate the kind of heat a ceramic insert needs to cut. My lathe can only go up to 3500 rpm, is this fast enough? Oh yeah, we will be dealing with mostly 12L14 steel. Also, I could use some tips on running with a ceramic insert. THANKS!