Dec 21, 2017, 07:3812/21/17
I would say that the answer is likely to be yes... with all crafting you are only guaranteed legendary if all the parts are also legendary.
However why would you want to destroy your fur hat ? especially if its legendary.
I recall reading a piece somewhere that the equipment created by using the fur hat was not much better than the fur hat itself ,and there's all that silver needed to consider as well