Hi, I have some questions.
I will try to build a breakout board for micro sd card (I know they exists but I want to build one myself, not ordering).
My plan is to attach a sd socket, tiny transistors and then in the end drill some holes so you could use jumper wires to attach the whole circuit board to your existing project. I will try to stick with surface soldering so the board could be very small and I don't have to drill so much holes.
I was wondering if it's possible to make a pcb that have that small lines? Don't know what the "lines" are called but will the iron chloride remove those or will they stay?
Tldr; How small and precious could you be when using the iron chloride method?