So I just bought a Tofu on the aftermarket to hold me over until some group buy purchases start getting shipped out, and it came with a poly carbonate plate and a brass plate. When I was building it I began to question how these plates affect the feel of the keyboard at all? If you’re not farmiliar with tray mount design here is good picture from this post by Thomas Baart:
As you can see the PCB is screwed into the case itself. My question is: why is the plate necessary in this design at all? It seems to me that all the force being imparted on the switch goes down into the PCB and then into the case, what does the plate do here?