06/30/2019 at 14:18 •
So I had no idea how to tell KiCAD where to keep soldermask off so I could have all the traces exposed.
When I realized, duh, you just draw on the soldermask layer. Since the boards are already 100% covered in mask, obviously when you draw on the soldermask layer it'll remove soldermask where you draw.
So now the board has exposed traces as artwork!