Originally Posted by Gany
F2R roadbook alloy is 2.16mm including the black paint so guessing 2mm used. I say tape over the holes then vac form straight over the top with HDPE!
Good idea. I'll take my steel one up so we don't damage your original.
HDPE looks approximately 3rd the weight of alloy. So the wall thickness could be 4mm and be about the same weight maybe. Thoughts