[bluepilot]

I hope this can be considered a household electrical item. I have a load of old Hornby 3-rail track which has seen better days. I wanted to re-plate the tracks and re-paint the sleepers. However it's all held together with bent metal tabs which have to be carefully bent up by forcing a screw driver under them to get everything apart. In the case of the centre rail this means damaging the insulation which will therefore need to be replaced. Does anyone know off hand what material it is made of? It appears to be some sort of impregnated paper/cardboard wrapped around the bottom of the rail. I've seen similar stuff wrapped around the cores of old transformers. Where is it possible to get any?