part001 = startSketchOn(XY)
    |> startProfile(at = [0,0])
    |> line(end = [0, 10], tag = $thing)
    |> line(end = [10, 0])
    |> line(end = [0, -10], tag = $thing2)
    |> close()
    |> extrude(length = 10)
    |> fillet(radius = 2, tags = [thing, getOppositeEdge(thing)])
