Face not coplanar with Sketch

[jdegenstein]

from build123d import *

with BuildPart() as p:
    Box(10,10,10)

with BuildSketch(p.part.faces().sort_by(Axis.Z)[-1]) as s:
    Offset(p.part.faces().sort_by(Axis.Z)[-1],amount=-1)

gives the error ValueError: Face not coplanar with sketch in relation to the call to Offset()

[gumyr]

Commit 3d6414d06b01970771ff695ea55cc74e14778175 realigns all faces add to a Sketch to its local Plane.XY which allows faces to be added without the coplanar error. Here is a slightly move difficult version of the above:

with BuildPart() as p:
    Box(10, 10, 10)
    front = p.part.faces().sort_by(Axis.X)[-1]
    with BuildSketch(front) as s:
        offset(front, amount=-1)
    extrude(amount=-1, mode=Mode.SUBTRACT)

It's still possible to get into trouble by adding non co-planar edges as determining the plane they come from is problematic. Note that if the edges are built in BuildLine all the translation is done for the user automatically.

[jdegenstein]

Thanks gumyr!