Èske yo ka itilize yon creuset fè pou fonn kòb kwiv mete nan yon founo k ap fonn endiksyon?

You can choose graphite crucible for melting copper in endiksyon fonn gwo founo dife, or you can buy induction furnace ramming material yourself, and directly ram the furnace wall lining on the furnace wall to directly smelt copper. It is definitely not possible to use an iron crucible.