A 2B or softer pencil or White Out. Is the latter still available for two finger typists?Beautiful work! I would like to know if there is something that I can apply on copper to prevent flux and solder from running all over the project. Something like a painter's masking tape in liquid form perhaps? I've heard that wide pencil lines stop the flux from travelling to unwanted areas but I haven't tried it yet. Any ideas out there? Thanks folks.