I'm not sure if this is the right area to post this but here it is. Does anyone have any idea of what type of material the accordion type way covers, that you see on some mills and grinders, are made of (looks like plastic) and were can it be sourced from. I want to put a tool post grinder on my old 9 by 20 lathe and I need something that will cover the ways and fold up as the saddle moves along. I have tried aluminum foil and a couple of other types of materials, but the results are less than useful. Thanks.