That what I have been doing. Real light and slow . like 0.015 . I have been spending it around 2 thousand RPM. Maybe I am missing something. My pocket machinist hand book leaves out a lot of info.
I'm not sure if I understand. Is those settings not working or what do you need help with?
I usually use this page for a quick rough estimate:
The premier source of tooling, parts, and accessories for bench top machinists.
littlemachineshop.com
Calculating with tool steel(rather use harder than softer steel for the calcs) I get around 3k rpm and 4 ipm using a 3/16" carbide endmill.
If you have a rigid machine and tolerance isn't tight then you'd need to run the 1/4" at 2.3k rpm and 4ipm.
This is for 2 flute endmills.
You can feed almost twice as much with a 4 flute but at the cost of chip clearing which might bite you in the end as the slot fills up.
Carbide can usually run quite hot(much hotter than HSS tools) but to hot and you will probably dull your endmills.
Best way to reduce heat is either by cooling(not sure if carbide endmills are as sensitive to this as carbide inserts are) or reducing feeds and speeds.
If you reduce your feeds too much relative to your speeds you will start rubbing your endmill rather than cutting, thus increasing heat A LOT, so these need to work together as you adjust your numbers.
The whole speeds&feeds thing is very sensitive to what machine you have.
A big sturdy mill will have no problems with high numbers whilst they may prove catastrophic on a smaller and less rigid mill.
