In the course of working with the base of foam I had softened and rounded the corners with handling, sanding, etc. Given the nature of the ďsandyĒ base, I think this looks fine but it is something you should be aware of if crisp corners are important to your project. I also found the foam had bowed a bit. I think this probably due again to my careless handling and possibly to the thinness of the base at the one end. It ended up bothering me so I fastened the base to, well, another base in order straighten it out.
What can you expect from someone who sands sand? Here are two final photos of each version.
This simple project turned out to be more fun that I expected. I learned a lot, gained some confidence, and ended up with a base for a kit that looked a little forlorn without one. Iíve got some ideas for a more complicated piece next and I also think that a waterline ship model could be given a home on a piece of this foam as long as relatively calm seas were called for. You donít need special tools for a simple project but you definitely need the mask, some thinner sealing medium that I used, and some basic sculpting tools will be helpful for more intricate work. But since Iíve made those mistakes for you, you can now try this and probably top my effort your first time. I donít think youíll be disappointed if you give it a shot.
The last photo shows the tools I used for the project.