Attached are 2 images from Solidworks. What they show is a section thru a pocket machined with a .50 dia endmill and then the corners with a .250 ball endmill. The tip of the ball mill does not follow the sharpe/square bottom corner of the first pocket. The ball mill does a .125 radius at the corners and leaves a little raised area at the pocket bottom. I think I would have to match the flat endmill to the radius of the ball mill to not get what the picture shows.
Pat |