THE FACT ABOUT FOUR-LAYER INNER AND OUTER LAYERS 2OZ COPPER THICK PCB CIRCUIT BOARD THAT NO ONE IS SUGGESTING

Notice that, Simply because you positioned power on an inner layer, that doesn’t suggest you can’t put power in other places. You can nevertheless route power with your other signal layers as rails utilizing copper pour, or as thick traces.---Exactly what are the colour options for PCB solder mask? Green, black, blue,