Have a problem with PCB design? ← Knowledge Base My PCB does not require Solder Mask, what should I do? What is the correct way to draw the silkscreen on the bottom side? My PCB does not require Drill Holes, what should i do ? Which layer should I use in EAGLE for milling? I don't want silkscreen on my PCBs, how can I proceed with a PCB Assembly order? How do I design non-plated through holes/slots? How do plated through holes/slots shows on the Gerber?