Abackplateis the metal or plasticmaterialused to mountkeyboardswitches on a mechanicalkeyboard. ...polycarbonateare all good options for a ...
The faceted sides were 3D printed in pieces, glued together, and then attached to a 1/4 ″ thickbackplatemade out ofpolycarbonate.
The MembraneKeyboardCompany Ltd supply customBackplates, Housings and Enclosures which can be fitted with MembraneKeyboardsand Membrane Keypads ...

This particular example perfectly highlights why Polycarbonate Keyboard Backplate Material is so captivating.
As a leading foilkeyboard... Like the name, polydome button is made from a raised poly(polyester orpolycarbonate) button, not a metal dome.
Keybored has an excellent video (above) and diagram on how differentmaterialsinfluence the sound of akeyboard, which is interesting whether ...

...keyboardat this point, before you reengage the locking tabs, when you can easily reseat any flappers that need it just by unclamping thebackplate...
Thekeyboardintegrates sound-dampeningmaterials, including Poron foam beneath the plate and XPE foam under the switches, which collectively absorb ...
Top housingmaterial:Polycarbonate... Bottom housingmaterial:Polycarbonate... ClackifyKeyboardStand 4 Tier - Galaxy Chameleon Blue