Jon
As a new member of RMweb I would like to congratulate you on a fantastic step by step guide to scratchbuilding signals, most informative and the photos help to show how its done properly. If you don't mind I would like to print this off and keep it at my workbench as a workbench manual. As and when I work out how to do it I will pass on a couple of photos taken at Barnetby, one is a ground shunt signal painted black with a yellow stripe across the centre, the other is a standard tubular post. Keep up the good work.
Alan