Originally Posted by caleb105  I know that I SHOULD be running at MORE than 2000rpm, but I CAN'T!
Also, the feedrate won't have anything to do with the surface cutting rate.
So....are you trying to tell me that people use a 1/4" endmill and are milling their aluminum with 130fpm surface cutting speed?
-Caleb105- |
The SFPM is the cutting speed recommended by the manufacturer of the Endmill in an industrial manufacturing environment.
Meaning that this speed will be a good balance between Toollife and Metal removal rate.
In a hobbyshop where cost of Endmills may be rated a little higher and manhours a little lower it can make perfect sense to derate the SFPM.
The longest Toollife may be well below of the manufacturers recommended SFPM.