Don't think the clay will work!
vidrar
You might need to rethink the clay for a background, I've never tried it but with my experience using clay in my Taxidermy I think unless you have a kiln to fire the clay its just going to crack and crumble and it will also be heavy and you will never get it sealed good enough that it want get wet and dissolve.. Why don't you try the strofoam again? its cheap and easy to work with, just go easy on the heat gun next time, or don't use heat, you can use sandpaper and smooth up the styro for the cement coating.
vidrar
You might need to rethink the clay for a background, I've never tried it but with my experience using clay in my Taxidermy I think unless you have a kiln to fire the clay its just going to crack and crumble and it will also be heavy and you will never get it sealed good enough that it want get wet and dissolve.. Why don't you try the strofoam again? its cheap and easy to work with, just go easy on the heat gun next time, or don't use heat, you can use sandpaper and smooth up the styro for the cement coating.
