Apply the bondo to the resin hood, and sand it to the shape as best as you can, if you start to hit the paperstock, stop. This process is very time consuming and will need more than one layer. I used the all purpose bondo, but I don't know the difference between the all purpose and the auto, so I don't know what the difference would be if there is a difference. Now to create the proper shape with bondo.
I applied 2 layers to the outside and 2 layers on the inside, although it took 4 days to do this, you could now throw this thing across the floor and it would stay solid. I used epoxy resin because it gives you more time to use and doesn't stink up the house, but it does take 24 hours per layer. Like most pepakura that I'm sure you've already read, the next step is resin.
