corner radius

[kendo]

this is a pocket unit on a vertical nexus mill with pc fusion 640M
the shape is a simple square,
using a 1/4" endmill, and all four corners set at zero chamfer/radius
the tool still arcs in the corner to make a 1/4" radius for some reason

[CNCRim]

Check Tool Data page, suspect tool definition is wrong.

[kendo]

tool is defined as endmill
nominal: .25"
actual: .25"

plus, the X-Y size of the pocket comes out perfect