Originally Posted by jdubhack
Close, but your forgetting the tongue in the middle.
Yes, but I'm not sure if that's actually needed, it looks like more of a piece that just helps you slot the tray in correctly. Front what I saw in the picture a few pages back the two front "flaps" + the base holds the tray in place. Actually maybe it is needed as you need some way to lock the tray so it does not slide (ie. towards the back where the usb's are). But then again the console inside is contoured so perhaps that provides the locking action.
Also not sure on the dimensions of it. Also, if I were to try to 3d print that, I don't think it would be very durable. It'd probably snap off when I tried to peel off the excess print.