The techniques of this method are comparatively basic, and the key should be to plug the pores and cleanse the plugged solder mask. Extra flexibility and dependability: Double-sided PCB arrives with the two the highest layer and base layer, so You can utilize the bottom layer like a floor copper https://simonbgikk.bloggadores.com/30652784/6-layer-central-control-pcb-board-for-dummies