I now wanted to get the folded edge finished before fitting the foam. I have a metal folding press but I'm guessing most of you will not have one of these so there is another option. Get two lengths of 2" x 1" wood and clamp them along the bend line with a G-clamp at both ends. Now clamp the centre of the wood sandwich in a vice.
Bend the panel over till you reach the perfect angle.
