I use a Gaugemaster one for my O gauge layout which has been exhibited a few times which has given excellent service. I can't remember how old it is now but it is a few years ago since I bought it. I had to shorten the cable recently as the edge of the casing had worn through the cable and was causing a break in one of the wires so just chopped it shorter and re-soldered.
Hi Andy,
Seasons Greetings to you and I hope 2015 goes well for you.
Although I don't comment very often, I do enjoy reading about your progress.
All the best.
Alan.
I have also used it extensively on Factory Lane Sidings for both buildings and other scenic work. I also used a slightly more dense version which was from an old exhibition stand which had a grey foam. I used this for the cobbled road surface simply scribing with a ball point pen and painting/weathering.