When a component is set to display "by material," the Material Definition assigned controls both the Boundary of the component and the Hatch of the component. The Plan Linework component of the Material Definition determines how the Boundary component displays in a Plan (Top) view; the Plan Hatch component of the Material Definition determines how the Hatch component displays. Keep in mind that in a properly defined multi-component Wall that has a component at every point across the entire width of the Wall (no empty gaps without a component), there are two boundary components at each transition from one component to the next. One will be drawn on top of the other; when they differ, it appears that the component with the lower cleanup priority (higher priority number) takes precedence, which is the opposite of what I would have expected.
In your sample Wall, the Masonry.Unit Masonry.Brick.Modular.Running material assigned to the brick components and the Thermal & Moisture.Insulation.Rigid Insulation material assigned to the insulation component [Plan Display Representation for both] still have the original Color 11, 0.25 mm wide Plan Linework assignment. The Thermal & Moisture.Insulation.Air material, on the other hand, has the true color 219,219,219 assigned to the Plan Linework component. Your drawing is set up to use color-dependent plot styles, but the layout's plot style setting is set to None, so I do not know how Color 11 plots in your system. When I chose the AIA LWT by Object.ctb file as the plot style, Color 11 plots Black, full intensity, with the object lineweight, which would be 0.25 mm, and so it is heavier than the boundary between the air gap and the insulation, which is governed by the true color assignment [which does not use plot styles, but plots in the assigned color].
If you want all of the inner boundary lines to be same light gray, then you need to assign the 219,219,219 color to the Plan Linework component of all of your Material Definitions. The Shrink Wrap component will see that the outline of the Wall remains full intensity black (assuming Color 113 plots that way in your plot style), as it will overwrite whatever is assigned to the Plan Linework component of the Material Definition assigned to the components exposed to view on each side of the Wall.
David Koch
AutoCAD Architecture and Revit User
Blog | LinkedIn
