Diy no sew upholstery thread

[rumrumm]

I used FRP (that's the plastic shower wall material, right?) for my door panels and kick panels but it does not bend well enough to use for any panel that is not flat. I used luan for the trunk for strength. But I found that upholsterer's water-resistant cardboard material worked best for the curved areas. You can also wet it and form it into a tighter curve if you need to. Here is an in-progress photo of the lower rear interior panel made from that material.