Having experimented with EVA foam and resin etc; I have decided it doesn't suit my project. It has potential for something else. I was using it to make the bodywork but HDPE is better, once you have persuaded it, with a heat gun, to take the shape you want. The good points about are that it is very strong, rot proof and a delight to machine and in my case I don't need to paint it because I like the colour as it is. If anybody decides to try it, I would recommend using the mid section of a 210ltr drum as it is the thinnest part and easier to shape. It is also pretty flat.
I spent ages looking for something with which to make the bull nose and eventually chose some cedar that I had. I am pleased with the result but still have to make it look like brass. I thought about using gold leaf so something new to have a go at. Talk about posh!