Group Objects into Single Object

Hi there and Happy New Year,

Looking for some help to combine multiple objects into a single object for laser cutting.

I am trying to create a roof line for a model I am scratch build. To do so, I drew a compound path shape (source two triangles), 4 elipses and used the Shaper Tool to cut away unwanted sections to the objects. The end result yielded the following:

Upon closed inspection, I can see that the various objects after cutting away the unwanted portions, still seem to be individual objects.

However, I cannot select these or group these using the pathfinder mode and 'unite' the items.

When burning this object on m laser cutter, it sees these items as individual objects and burns as such.

How do I combine these items into a single object? 

Any help is much appreciated,

-Tiest