
For custom keyboards, I've always used stainless steel plates. I've built about 10 keyboards like this. I never really gave it much thought, it just seemed like the go-to material for a keyboard.
But more and more now I'm seeing people using other materials. Different metals and plastics. I imagine this has an effect on the feel but I'm not sure to what degree.
Even one time I recently read a post on reddit talking about a thinner PCB that is supposed to "pair" well with a plastic plate to give the keyboard lots of flex.
I'm interested in learning more about this topic. I would like to discuss what materials work well for keyboard plates and maybe find some websites online that provide cutting services for these different materials.