Milling Smooth Bottomed Hole?

[Otokoyama]

Does anyone know a good technique for milling a hole with an exceptionally smooth, square bottom about .5" deep? The finish on the sides of the hole don't really matter.

[rustyolddo]

I've just used a G02 to mill pockets for bearings & such. Make sure you are using a center cutting endmill. Helps if you can ramp into your cut.

[HuFlungDung]

An Iscar Helimill does a really fine job of finishing a blind hole, with a light depth of cut. Your machine and work has to be really solid, of course.

[Otokoyama]

Thanks!