Full Shape

This is the full shape planned out. I've not got to make up some cardboard models of this, chop the bottom off it & I will then be able to transfer the flat bottom onto this image. This will give me a solid level footing so the whole unit is perfectly stable & strong.

I have also been thinking about making the unit out of plywood & then fibreglassing the whole unit. This way I can get a nice smooth paintable surface that is fully waterproof. I would just need to the paint the inside with waterproof sealer & all going to plan it should last for years.