RE: [CAD_CAM_EDM_DRO] Resolution and surface finish

The vertical lines you are referring are a sign of vibration not a
reflection on your resolution. If you are cutting 6061 aluminum it is pretty
common unless you have a very stiff setup. Any movement in your setup,
spindle, or table will give you the pattern you are describing. Also, speed,
feed, cutting fluid, bit sharpness, . . . . all have an effect. I have seen
it less often when machining other materials. Low resolution will show up as
"stair steps". Yes, a 4 flute will yield a better finish once you get the
vibration cured.

Tim
[Denver, CO]

> I am milling a circlular pocket with a 1/2" 2 flute HSS. The sides
> of the pocket don't have that great of a surface finish. My mill has
> .0005" minimum step resolution. Can this be causing the vertical lines
> or is it something else like vibration? Dull tool? Will a 4 flute give
> a better side finish?
> The thing is that the original Bridegeport series 1 (boss5) only had
> .001" resolution
>
>