I’m a newbie with a few successful home-etched boards under my belt, but have a question about drilling with respect to copper placement.
For reasons I don’t understand, sometimes my top and bottom copper etching layers have wires terminated in ‘solid blobs’ and other times in ‘hollow blobs’. I can see any relevant properties of wires or components to change how they appear.
This makes it hard when drilling the holes. Drilling through ‘hollow blobs’ is easy, but through ‘solid blobs’ is hard and the drill moves around.
I’ve attached a picture of part of my board and the corresponding bottom copper layer.
mark4.fzz (26.9 KB)