Note: If you need access to SD card from the front, you will need an SD-card extender cable. I have not tried if it fits, as I have not got one, and use OctoPi without SD's.
This version has SD access from the side, but you can not get to it if you rack mount it.
You can print a cap, if you do not need all the plugs on the rear plate. The holes are 16mm for microphone plugs.
Make sure there are no cables between the fan and the heat sinks. This was designed for a CNC which uses much less power than a 3D printer. You may need an extra fan directly on your heat sinks for 3D printing ?
I moved the Piezo to the back of the PCB to get the screen closer to the front plate. I should probably just have removed it, it is quite annoying listening to.
Let me know how it prints.