I love the style, they look just enough homemade to make me think their sound will be unique, but just clean enough to know they're going to be reliable.
Look into photolithography like etching circuit boards. You can etch anything. You could probably do laser toner transfer too. If you etch down the surface just a little bit, you can then squeegee paint or ink over this and make a really nice looking graphic. It will have a very cool vintage high end look if you do it right.
If you are handy with digital tools, look up patent drawings for text and lettering to vectorize and use. That is a cool source for this kind of application.
Thanks. It was my first try with punches. Like, the upside down 8 is literally the first thing I ever stamped. I thought about making it as nice as I could, make a jig or something but then I figured, fuck it, it's my pedal and I want it done right now, not right.
Next time I'm going to do all the labels without the vowels (fzz, vlm, tn...) and then stamp all them all on one side in a jumble.