07-07-2020, 02:10 AM
(This post was last modified: 08-07-2020, 12:13 AM by squeak.
Edit Reason: clarity
)
Simon is correct in that the bottom panel is a black bitumen impregnated heavy flexible card, in this country called Nelson Board or bitumen board.
In an earlier post I described how I do it but Simon's description is closer to the original. I do think bifurcated rivet ends on the inside are a bit scratchy but the recessed holes that might have helped are on the outside? In support of my lower mounting position many cars have a damaged top edge due to the cushion being dragged over it. If originality is the aim the backrest will be 2 piece tacked , and riveted along the lower back.
In an earlier post I described how I do it but Simon's description is closer to the original. I do think bifurcated rivet ends on the inside are a bit scratchy but the recessed holes that might have helped are on the outside? In support of my lower mounting position many cars have a damaged top edge due to the cushion being dragged over it. If originality is the aim the backrest will be 2 piece tacked , and riveted along the lower back.