Breaker Knockout

This is a breaker knockout blank to fill in spaces where breakers have been removed from circuit panels or breaker boxes. It is a remix from the one by N1VG. The only changes were I made the tabs more flexible by adding reliefs in front of and behind the tabs.
Designed in SketchUp
Printed in PLA, and I used MatterControl.
I printed them on their sides, so the layer cleavage would make the tabs less likely to snap off.
I printed with support, and a brim, which will require a little clean up afterwards.