I had an idea for the underseat area. I had previously made up a tray and battery box to house all the electrics out of folded aluminium sheet. This was fine and nice and light, but it dropped down below the curves of the frame's subframe and I didn't like that.
Then I thought .. maybe I could make one from fiberglass, in one piece .. that followed the curves of the frame, so from the side, it was all but invisible .. so I took some cardboard and traced the lines of the frame onto it .. cut it out, and stuck it to a bottom piece (which I scored with a stanley knife so it would curve nicely) and made a tray .. shaped a bit like a sleigh!
I test fitted this, and it fit nicely and will have enough room for the relays, fuse box and battery. I will build a divider to keep the battery seperate (in case of leaks) and I might be able to squeeze in a couple of spanners and a screw driver behind it.
Viewed from the side, it's all but invisible as the bottom of the box now follows the lines of the frame.
Jingle bells.. Ahem.
I then covered the cardboard in clear selotape so the fiberglass wouldn't stick to it, and layed it up with resin and glass.
Released from the mould and ready for cleaning up. It turned out really well .. except the bottom didn't release so well, so I'll have to sand the cardboard off. No big deal, just a bit more time consuming.