Working with off angles bodies

I’m trying to build a tetrahedral assembly and to model the finger joinery I need to cut the component via a boolean subtraction. Trying to align the group of cutting objects that are oriented at 30 degrees by 25.7 degrees along the edges of the panels is a grand nuisance as I cannot manage to set the gumboil for the group and keep it set.

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CameraFloat.3dm.zip (1.2 MB)

you will want to create and save some custom construction planes for this.

setting a plane to object is a good place to start.