The Mechtrum

This is my Mechanical keyboard case for the ZX Spectrum 48k , Byte Delight Harlequin and Sifzif-512 boards. 

Please see my video if you want to know more. Very sorry but I can't provide the Key Caps that are featured in the video so you will have to source them and you could also print some with this link along with another style of case. 

https://www.printables.com/model/700687-replacement-zx-spectrum-48k-case-key-caps-for-mech

If using the Original ZX Spectrum board you need to do a regulator mod and remove the heatsink otherwise it will deform the printed parts.

The keyboard PCB is by Don Superfo and you can buy from PCBWAY
https://www.pcbway.com/project/shareproject/ZX_Spectrum_Keyboard.html

These are the thin Keyboard PCB connectors that replace the membranes.

8 way

https://www.pcbway.com/project/shareproject/ZX_Spectrum_keyboard_edge_connector_5_way_452eb7b7.html

5 way 

https://www.pcbway.com/project/shareproject/ZX_Spectrum_keyboard_edge_connector_2e6dd9f3.html

you will also need a way to connect from the main keyboard PCB to the smaller ones and I used 

 
TE Connectivity FLEX CABLE 

5 way A9AAT-0504F  

8 way A9AAT-0804F

from Digikey

The screws used are m3 self tappers and I will add the details when I can.