I quite new to all this. I’m working on a project were I need to place 24 x WS2812b LEDs in a circle on custom PCB. Fritzing does not have the capability to lay this out correctly and accurately so I’ve make a custom part using CorelDraw. I have put in the copper and silkscreen layers, however I need a mask
What I need to end up with all the tracks having a mask and only the pads exposed, what I getting is ALL copper exposed.
So how do I add a copper mask, what slayer names are used?