This is part of the project to clone the Sinclair ZX80 8bits computer from 80's by people of the forum http://www.va-de-retro.com/foros/app.php/portal
botton side need to be printer in two part and optionally glued in normal printers.
For the ribets, search for R2648 in certain chinesse web.
To be printed with support, the STL file also include some aditional supports I need to print it correctly with Cura.
There are aditional parts, for some customizations I made, check the correct parts for your need.
It's need a lot of support, I use Cura, with the zig-zag setting and a separation of 5mm.
Remove all the support and enlage the holes with a 2.5mm drill