done with bronze clay

Well,  I've attempted bronze clay yet again and yet again my pieces did not stay together.  I spent a lot of time constructing the mezuzzah but the slabs do not stay together when they are fired.  I think that the size and shape of the mezuzah makes it a poor choice for bronze clay and the way it behaves when fired in the carbon. 

The tiny tower, which is supported by 4 walls instead of 3 actually held up fine, but I am not really interested in making towers out of bronze so I am yet again going to abandon the whole bronze clay thing. I did hear that Hadar Jacobson has a copper clay available which can be fired without the carbon pot, which may be a better solution for my pieces.  Still I am waiting to hear more, because so far I've only seen smaller accent pieces made out of this material, not larger pieces like I want to make.