Re: Motors too weak or bad ball screws or software issues?? pictures of odd cuts

1/2" cutter(s)..4 flute HSS, US/Iseral made, I changed to a new
cutter after the middle part came out like that.

.05" depth cut per profile cycle (counter clockwise)

for the middle part, I didn't set the tool hieght correctly for the
last pass to remove all the material (moot point being that the part
was ruined before the last Z command)

not a ball end mill, strange reflection (bad picture)

even with a .005" backlash, the "steps" are way more than .005"

material otherwise cuts very easily (bandsaw, drill and tapping)

all parts from the same raw stock.

How should I approach this problem? Are there some tests or sample
parts to run to see what is possibly causing the trouble? Perhaps
try cutting in conventional direction?

I ended up changing the design and went with 6061T6 alum I had on
hand (no fancy radius cuts, just plain rectangle part for now :( )

thanks