Next I turned my attention to the cabinet. This one was a little tricker since some of the pieces are not symmetric. I needed to figure out how the parts aligned so I did a dry mock up and used the power supply and aluminum extrusion ("Z" tower") to help visualize how things go together. It was clear that I should start with one of the cabinet sides and attach the cross pieces (bulkheads) to one side then attach the other side. Here's a dry run:
======================== EDIT ========================
I discovered later that the top piece - the stepper motor mount - needs to have the square slot opening facing to the front like this:

==================== END EDIT ========================

The sides themselves are different - one has slots for the USB cable and on-off switch. The other has holes for the hinges for the front door. The photos on the SeeMeCNC site show the left side having both the connector slots and the hinges but my parts are different! I put the hinges on the left like the SeeMeCNC photos but this puts the switch and cable connection on the right. Here's the right side with the switch and USB holes:

One tricky thing to figure out was the base piece. It has an off-center hole. I mocked up the base assembly with the poser supply to help figure it out:

Then when you take the power supply out you see how the hole should align:

it provides ventilation for the power supply's fan! The DropLit has 4 plastic feet that raise it off the table so that provides a path for the air.
Notice the vertical piece with the slots in it in the photo above. If you look at the SeeMeCNC photos you'll see what that is the mirror base mounting plate (78732):

Now that I figured out how things lined up, I assembled the pieces to the left cabinet side.
EDIT: note that the stepper motor mount is not correct - the square slot opening needs to face front - see EDIT and photo above.

Note the cross brace on top - that is the stepper motor mount. The stepper will be on the right side - you can see the round hole and 4 screw holes to mount the stepper on the right of the brace. I attached the stepper motor mount (78715), the dish base (78718) , the mirror base mounting plate (78732), and the PSU base plate (78734) to the left base side (78712) )(but note that the sides are actually different although the DXF file shows 2 of the same part).
Once that was complete I installed the base (78711), note it's orientation with the wide leaf projecting to the left:

Then I installed the tower base (78719), it sits above dish base.
