Hi Bud,
I forgot to mention that this tool is called a center cutting endmill, that means the flute on one side is ground past the center. So it will cut easelly on a plunge cut or ramp cut without building up preasure in the middle of the tool. These endmills are designed to work in this application. When you use it to make holes just take it easy when you plunge straight down and you won't have any problems. I've used these endmills for a very long time and never had any problems with them, except when I've stacked parts together and tried to plunge through 5 or 6 parts. The endmill leaves a round thin slug that may get between the parts if there stacked. (Not good if your trying to hold a total tolerence of .0005 on location and size.)
Hope this Helps
rruybal |