- Flash & test controller
- Solder diodes (can be soldered to the top or bottom side of pcb)
- Solder controller to pcb (& test pcb)
Solder the battery and power-switch to the pcb (& test again)
Rubber-band the PCB & switchplate together (alignment is not important here)
Insert a few switches (to align the switchplate), but do not raise the switchplate to clip to the switches.
Leave the switchplate in direct contact with the pcb, the way the rubber-bands are holding them.
Flip the assembly to rest on the switches.
Apply solder to the joint-holes in-between the switches (this joins the pcb & plate together)
There are twelve.
Complete.
Install guides into PCB with the bar-clip toward the back
Install inserts into keycap with the offset toward the front
& install the bar into the inserts with the bend away from the cap-edge
...with a switch installed...
Flip the keycap/insert/bar assembly onto the switch
Align the keycap & inserts to the switch & guides.
Press the keycap down onto the switch
Use your bar-insertion tool to press the bar into the clips
Done.