Originally Posted by Spad
I've used it too, in theatrical applications as a glide and as a shelf liner on a piece of fire apparatus. It seems to expand a lot with temperature, to the point where the shelf liner (4'x6') moved enough to pull fasteners. Have you had this problem using it as a skid plate near the engine and headers?
I haven't noticed any expansion, tolerance isn't critical on a skid plate. I use the stuff called "High Density Ultra High Molecular Weight Polyethelene". It's really tough and seems to bend easier when heated without cracking so bad.