Coplanar Troubleshooting

Got it, proper sequencing assures tight bounding box, and therefore a more accurate cut list report.

Will practice for next project. In the present case since I did not use proper sequence when component was created, can I recover by changing the axis? Or just start over?

Thatā€™s one way. Sometimes it makes more sense to model the component at its final angle and then change the componentā€™s axes to suit the component.

You can change the axes on the component but itā€™s such a simple component, I would just start over. I copied the outside face of your component out so I didnā€™t have to redraw it. Then I rotate it to vertical, extruded it and made the component.