Hello!

Long term reader, first time post.

Trying to get vinyl to adhear to a plastic door panel. Reading through the forum, I know where I went wrong.

Been prepping the plastic parts by cleaning with laqquer thinner, sanding with 80 grit sandpaper, cleaning again with laqquer thinner, adheasion promoter, and using DAP Weldwood landau adheasive at 100% coverage on both parts.

Found out I needed to use an "felt underliner" fabric. Have been searching for the felt underliner fabric, but have come up with nothing.

What type of felt underliner fabric do I need to get and what suppliers carry it?