This video from oorail.com shows how to restore old Hornby, Hornby Dublo and Tri-ang semaphore signals. The Hornby semaphore signals - R.169, R.170, R.171 and R.172 have been manufactured for decades but often turn fade to an unrealistic yellow colour, this video shows you how to restore these old signals and how to replace broken railings with paperclips. The video shows the end result towards the end of the video. Older Hornby Dublo signals are made of metal, but the metal often flakes. Be…