Hi, I am new to the whole custom keyboard scene. So before I get started from the ground up, making a custom case for a pcb is what is the most common material that is used for the case itself. I know aluminum can be used, and I can find that in a scrape yard and melt it down into blocks and put it on a cnc machine. As for acrylic where is the best place to buy that? I've looked online but haven't managed to find a place to actually buy any.