16 hours ago, Jim D. said:I haven't yet tried to "glue" together two halves of this type of mold. I assume one would make each half separately, close each, then melt the feet to stick them together. Or perhaps there is a better way?
I've tried "gluing" both ways: (1) with a chocolate backing as pastrygirl said in which case the center of your finished piece has 2 layers of chocolate in the middle dividing the fillings, or (2) just slightly overfilling the cavities, adding a drop of chocolate to each side, closing them together, and hoping for the best. 
The advantages of the former method are that the halves tend to stick together better and there's no spillage of filling. The downside (for me) is that you get that center of chocolate which together can sometimes be quite thick. With the latter method you don't get that thick chocolate center, but the halves don't stick together very well, and if your filling is runny then good luck trying to join the halves without making a mess. I find this works best with thick or sticky fillings like peanut butter, but expect to join a good number of halves together manually. 
