Book Case for Raspberry Pi 4 (Rpi4) and full-HDMI with SD card access

I had a request to make a Rpi4 version of my Book Case.  I was able to print it out and test it today so here it is.  I have also published two versions for rpi5 and copied/adapted most of the description from that model.

I wanted a good case for traveling and taking my Raspberry Pi for tinkering.  My requirements for this case:

• All Ports on One Side
• Full-Size HDMI
• Slim Case to save space when traveling
• LEDs visible
• Good air flow
• As few printer supports as possible
• Active Cooler Space  - I used one from Argon40, but there are other options that will fit.

This is the smallest case I could design to fit the Raspberry Pi 4 and the Waveshare Pi5 Connector Adapter for full size HDMI and putting all the ports on the same side.  I use USB-C for power so I removed the green screw terminal.  Since the Rpi4 doesn't have a power button, I was able to add SD access window without sacrificing structural integrity.  Case stands on end to save space and kind of makes it look like a book.  I haven't had issues with it throttling due to heat, even in tropical environments, so cooling must be working.  I used Black for the Cover and Purple Silk for the Pages.  

Requires:

Waveshare Micro HDMI to HDMI Multifunctional Adapter (Waveshare.com, amazon.com, etc.).  Remove the Green screw terminal prior to assembly.  It will come off with your fingers or a little heat from a soldering iron could help.

6 2.5mm heat-set Threaded Inserts for holding the board and closing the case

6 2.5mm Screws (shorter are better) for holding the board and closing the case

4 or 8 rubber feet for the bottom depending on which way you want to stand it up  (Cabinet Bumpers Furniture Bumpers Kitchen Cabinet Door Stoppers Sound Dampening Rubber Bumpers Made of Soft Eva Rubber for Quiet Drawer Close Anti Slam Cushion Rubber feet Pads 10 mm (50 pcs, Black)) (amazon.com)

Assembly:

Insert the 6 threaded inserts:  4 for the cover, 2 in the pages section for attaching the HDMI board.  Note:  One of the screws for the case interferes with one of the screws for the HDMI board.  This was a side-effect from shrinking the case as much as possible from my 2xSSD Rpi5 version.  This is why only 2 screws (nearest the full-size HDMI ports) are used to secure the boards.  The third is not used but still helps support the board by acting as a bumper.  2 screws are enough along with the tight fit around the ethernet and 4 USB ports.

Assemble all the boards together first.  Insert the assembled boards in the bottom of the pages section, ports first, and slide up the other end of the board working it through the port holes (this design is tight, but satisfying).  The tight fit helps to secure the Rpi4 without screwing it down.  Screw in the 2 screws to hold the adapter board to the pages.

Slide the Cover over and screw it closed.  4 padded feet can go on one or two sides of the pages section to keep it from sliding/scratching your desk.

I printed on a Mk4S with 0.15 layer height, 10-15% infill, PLA and Silk PLA for a pop of color.  Pages is printed upside down with supports only on the USB and Ethernet ports.  Print Cover on end with a brim and without supports.