Reply to "Casting building walls"

I just bought the Aluminite starter kit today. I need to cast some figurine accessories that will quite small and would be a pain to make all the duplicates by hand so I'm sure that the short working time of the Alumilite resin won't cause a problem. I'd like also to use their silicone to make plaster molds. I've used the latex plaster molds and find that process to be excruciatingly slow...days and days and layer by layer. For larger projects, I will use the advice you gave for different materials.