The laser-cut parts of the case are protected by an adhesive film which needs to be removed before assembly.
Bill of Materials
NOTE: Acrylic is a hard and stiff plastic which is sensitive to stress concentrations and shares a certain level of fragility with glass. Acrylic can scratch easily and should be cleaned with a mild solution of dish detergent and warm water. Never use cleaners unsuitable for acrylic. Never use a dry, abrasive cloth.
Here are the parts from the case kit:
Follow these images checking parts and orientation of the acrylic pieces. You will see a before and after image for each step. Make sure you have all the parts ready, shown in the before picture.
Insert the male end of the 4mm stand offs into each of the mounting holes on the Pi from the underside. Secure in place with the 9mm F/F stand offs, these should be on the top side of the Pi.
Now add the PoE HAT and secure using the 11mm M/F stand offs.
Now we can start positioning the side plates. Start by putting the Pi on its side, GPIO pins down, and place it on the GPIO plate.
Then add the USB/Ethernet plate.
Add the HDMI plate.
Then add the SD card plate.
Carefully lift the Pi and side plates and place on to the bottom plate. Make sure the SD card slot on the Pi lines up with the cut out on the plate. Fasten with 4 black screws.
All that's left to do is add the top plate and secure with the remaining screws.