I assume when crafting larger metal clay pieces, you want to let it dry longer and maybe fire it longer.  Is there an upper size limit for using metal clay? 

Thank you 

I have wondered that too. I have seen a 2" wide cuff and I ask the maker if she could make a bigger one and she said yes if she had the money for the PMC. So I guess from that it is rather expensive and that your imagination is kind of the limit.