outer edges longer than the center)
- they all have a ground relief to the center of the end mill, when plunging down into solid stock you want a center cutting end mill
0.010 or I tend to break tools
- You are saying you have run out at the end of the end mill, you have what you have and that will affect the cutting, couple that to
lack of rigidty and backlash and you will break them
-So just do shallow depth of cuts and plenty of them ( what more can i say ?)
run the spindle speed as slow as I can get it to run smoothly
- good spindles with appropriate holders run just as good slow as fast, like i said you have what you have and need to fool some to gain
experience with what you have. minimize the extension of the tool from the holder.
Like i said, take a piece of round stock and machine the outside trying different depths of cuts, feed rate / spindle speeds leaving say .010"
for finishing to some diameter. Look at results of machining to a depth of 1/2", is it square to the face, out of round, plunge cuts coming out differently?..........experiment with finish cuts cw and cw at different finish cut depths and look at the result
If you had say a normal mill i would just give you some recommended info that you can find anywhere, but with your machine you need to experiment and see what you can do.
Can't give you any better advice than the above,
RICH